1.
United States Antarctic Program
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The United States Antarctic Program is an organization of the United States government which has presence in the continent of Antarctica. Founded in 1959, the USAP manages all U. S. scientific research, currently, the USAP maintains three year-round research stations in Antarctica, the McMurdo Station, the Amundsen–Scott South Pole Station, and the Palmer Station. In addition, the USAP operates several summer camps and several research vessels that sail in the Antarctic waters. The programs fiscal budget for 2008 was US$295 million, and for 2012 was US$350 million, the Antarctic Sun Operation Deep Freeze Eltanin Antarctic ecosystem United States Antarctic Program The Antarctic Sun
2.
Web page
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A web page is a document that is suitable for the World Wide Web and web browsers. A web browser displays a web page on a monitor or mobile device, the web page is what displays, but the term also refers to a computer file, usually written in HTML or comparable markup language. Web browsers coordinate the various web resource elements for the web page, such as style sheets, scripts. Typical web pages provide hypertext that includes a bar or a sidebar menu to other web pages via hyperlinks. On a network, a web browser can retrieve a web page from a web server. On a higher level, the web server may restrict access to only a network such as a corporate intranet or it provides access to the World Wide Web. On a lower level, the web browser uses the Hypertext Transfer Protocol to make such requests, dynamic website pages help the browser to enhance the web page through user input to the server. Web pages usually include information as to the colors of text and backgrounds, an HTTP1.1 web server will maintain a connection with the browser until all related resources have been requested and provided. Web browsers usually render images along with the text and other material on the web page. These scripts may run on the client computer, if the user allows, a web browser can have a Graphical User Interface, like Internet Explorer, Mozilla Firefox, Google Chrome, and Opera, or can be text-based, like Lynx or Links. Web users with disabilities often use assistive technologies and adaptive strategies to access web pages, disabled and able-bodied users may disable the download and viewing of images and other media, to save time, network bandwidth or merely to simplify their browsing experience. Users of mobile devices often have restricted displays and bandwidth, anyone may prefer not to use the fonts, font sizes, styles and color schemes selected by the web page designer and may apply their own CSS styling to the page. The World Wide Web Consortium and Web Accessibility Initiative recommend that all web pages should be designed with all of options in mind. Non-textual information, Static images may be raster graphics, typically GIF, JPEG or PNG, Animated images typically Animated GIF and SVG, but also may be Flash, Shockwave, or Java applet. Audio, typically MP3, Ogg or various proprietary formats, video, WMV, RM, FLV, MPG, MOV Interactive information, see interactive media. For on page interaction, Interactive text, see DHTML, Interactive illustrations, ranging from click to play images to games, typically using script orchestration, Flash, Java applets, SVG, or Shockwave. Buttons, forms providing an interface, typically for use with script orchestration. For between pages interaction, Hyperlinks, standard change page reactivity, forms, providing more interaction with the server and server-side databases
3.
Multimedia
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Multimedia is content that uses a combination of different content forms such as text, audio, images, animations, video and interactive content. Multimedia contrasts with media that use only rudimentary computer displays such as text-only or traditional forms of printed or hand-produced material, Multimedia devices are electronic media devices used to store and experience multimedia content. Multimedia is distinguished from mixed media in art, for example. The term rich media is synonymous with interactive multimedia, the term multimedia was coined by singer and artist Bob Goldstein to promote the July 1966 opening of his LightWorks at LOursin show at Southampton, Long Island. Goldstein was perhaps aware of an American artist named Dick Higgins, two years later, in 1968, the term multimedia was re-appropriated to describe the work of a political consultant, David Sawyer, the husband of Iris Sawyer—one of Goldsteins producers at LOursin. In the intervening forty years, the word has taken on different meanings, in the late 1970s, the term referred to presentations consisting of multi-projector slide shows timed to an audio track. However, by the 1990s multimedia took on its current meaning, in the 1993 first edition of Multimedia, Making It Work, Tay Vaughan declared Multimedia is any combination of text, graphic art, sound, animation, and video that is delivered by computer. When you allow the user – the viewer of the project – to control what, when you provide a structure of linked elements through which the user can navigate, interactive multimedia becomes hypermedia. The German language society Gesellschaft für deutsche Sprache recognized the words significance, the institute summed up its rationale by stating has become a central word in the wonderful new media world. In common usage, multimedia refers to an electronically delivered combination of media including video, still images, audio, much of the content on the web today falls within this definition as understood by millions. That era saw also a boost in the production of educational multimedia CD-ROMs, the term video, if not used exclusively to describe motion photography, is ambiguous in multimedia terminology. Video is often used to describe the format, delivery format. Multiple forms of content are often not considered modern forms of presentation such as audio or video. Likewise, single forms of content with single methods of information processing are often called multimedia. Performing arts may also be considered multimedia considering that performers and props are multiple forms of content and media. Multimedia presentations may be viewed by person on stage, projected, transmitted, a broadcast may be a live or recorded multimedia presentation. Broadcasts and recordings can be analog or digital electronic media technology. Digital online multimedia may be downloaded or streamed, streaming multimedia may be live or on-demand
4.
Domain name
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A domain name is an identification string that defines a realm of administrative autonomy, authority or control within the Internet. Domain names are formed by the rules and procedures of the Domain Name System, any name registered in the DNS is a domain name. Domain names are used in various networking contexts and application-specific naming and addressing purposes, in 2015,294 million domain names had been registered. Domain names are organized in levels of the DNS root domain. The registration of domain names is usually administered by domain name registrars who sell their services to the public. A fully qualified domain name is a name that is completely specified with all labels in the hierarchy of the DNS. A domain name may represent entire collections of resources or individual instances. Individual Internet host computers use domain names as host identifiers, also called host names, the term host name is also used for the leaf labels in the domain name system, usually without further subordinate domain name space. Host names appear as a component in Uniform Resource Locators for Internet resources such as web sites, Domain names are also used as simple identification labels to indicate ownership or control of a resource. Such examples are the realm identifiers used in the Session Initiation Protocol, the Domain Keys used to verify DNS domains in e-mail systems, an important function of domain names is to provide easily recognizable and memorizable names to numerically addressed Internet resources. This abstraction allows any resource to be moved to a different physical location in the topology of the network. Such a move usually requires changing the IP address of a resource, Domain names are used to establish a unique identity. Organizations can choose a name that corresponds to their name. A generic domain is a name that defines a category, rather than a specific or personal instance, for example. Some examples of names are books. com, music. com. Companies have created brands based on names, and such generic domain names may be valuable. The use of names in commerce may subject them to trademark law. The practice of using a simple memorable abstraction of a hosts numerical address on a computer network dates back to the ARPANET era, before the advent of todays commercial Internet
5.
Web server
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A web server is a computer system that processes requests via HTTP, the basic network protocol used to distribute information on the World Wide Web. The term can refer to the system, or specifically to the software that accepts. The primary function of a web server is to store, process, the communication between client and server takes place using the Hypertext Transfer Protocol. Pages delivered are most frequently HTML documents, which may include images, the resource is typically a real file on the servers secondary storage, but this is not necessarily the case and depends on how the web server is implemented. While the primary function is to serve content, an implementation of HTTP also includes ways of receiving content from clients. This feature is used for submitting web forms, including uploading of files, many generic web servers also support server-side scripting using Active Server Pages, PHP, or other scripting languages. This means that the behaviour of the web server can be scripted in separate files, usually, this function is used to generate HTML documents dynamically as opposed to returning static documents. The former is used for retrieving or modifying information from databases. The latter is much faster and more easily cached but cannot deliver dynamic content. Web servers are not only used for serving the World Wide Web and they can also be found embedded in devices such as printers, routers, webcams and serving only a local network. The web server may then be used as a part of a system for monitoring or administering the device in question and this usually means that no additional software has to be installed on the client computer, since only a web browser is required. In 1989 Tim Berners-Lee proposed a new project to his employer CERN, the project resulted in Berners-Lee writing two programs in 1990, A browser called WorldWideWeb. In 1994 Berners-Lee decided to constitute the World Wide Web Consortium to regulate the development of the many technologies involved through a standardization process. On an Apache server, this is commonly /home/www, the result is the local file system resource, /home/www/path/file. html The web server then reads the file, if it exists, and sends a response to the clients web browser. The response will describe the content of the file and contain the file itself or a message will return saying that the file does not exist or is unavailable. A web server can be incorporated into the OS kernel. Web servers that run in user-mode have to ask the system for permission to use more memory or more CPU resources, executing in user mode can also mean useless buffer copies which are another handicap for user-mode web servers. When a web server is near to or over its limit, it becomes unresponsive, at any time web servers can be overloaded due to, Excess legitimate web traffic
6.
Wikipedia
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Wikipedia is a free online encyclopedia that aims to allow anyone to edit articles. Wikipedia is the largest and most popular reference work on the Internet and is ranked among the ten most popular websites. Wikipedia is owned by the nonprofit Wikimedia Foundation, Wikipedia was launched on January 15,2001, by Jimmy Wales and Larry Sanger. Sanger coined its name, a portmanteau of wiki and encyclopedia, There was only the English language version initially, but it quickly developed similar versions in other languages, which differ in content and in editing practices. With 5,377,348 articles, the English Wikipedia is the largest of the more than 290 Wikipedia encyclopedias, in 2005, Nature published a peer review comparing 42 science articles from Encyclopædia Britannica and Wikipedia, and found that Wikipedias level of accuracy approached Encyclopædia Britannicas. Other collaborative online encyclopedias were attempted before Wikipedia, but none were so successful, Wikipedia began as a complementary project for Nupedia, a free online English-language encyclopedia project whose articles were written by experts and reviewed under a formal process. Nupedia was founded on March 9,2000, under the ownership of Bomis and its main figures were Jimmy Wales, the CEO of Bomis, and Larry Sanger, editor-in-chief for Nupedia and later Wikipedia. Nupedia was licensed initially under its own Nupedia Open Content License, while Wales is credited with defining the goal of making a publicly editable encyclopedia, Sanger is credited with the strategy of using a wiki to reach that goal. On January 10,2001, Sanger proposed on the Nupedia mailing list to create a wiki as a project for Nupedia. Wikipedia was launched on January 15,2001, as a single English-language edition at www. wikipedia. com, Wikipedias policy of neutral point-of-view was codified in its first months. Otherwise, there were few rules initially and Wikipedia operated independently of Nupedia. Originally, Bomis intended to make Wikipedia a business for profit, Wikipedia gained early contributors from Nupedia, Slashdot postings, and web search engine indexing. By August 8,2001, Wikipedia had over 8,000 articles, on September 25,2001, Wikipedia had over 13,000 articles. By the end of 2001, it had grown to approximately 20,000 articles and 18 language editions and it had reached 26 language editions by late 2002,46 by the end of 2003, and 161 by the final days of 2004. Nupedia and Wikipedia coexisted until the servers were taken down permanently in 2003. Citing fears of commercial advertising and lack of control in Wikipedia and these moves encouraged Wales to announce that Wikipedia would not display advertisements, and to change Wikipedias domain from wikipedia. com to wikipedia. org. Around 1,800 articles were added daily to the encyclopedia in 2006, a team at the Palo Alto Research Center attributed this slowing of growth to the projects increasing exclusivity and resistance to change. Others suggest that the growth is flattening naturally because articles that could be called low-hanging fruit—topics that clearly merit an article—have already been created, the Wall Street Journal cited the array of rules applied to editing and disputes related to such content among the reasons for this trend
7.
Google
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Google is an American multinational technology company specializing in Internet-related services and products. These include online advertising technologies, search, cloud computing, software, Google was founded in 1996 by Larry Page and Sergey Brin while they were Ph. D. students at Stanford University, in California. Together, they own about 14 percent of its shares, and they incorporated Google as a privately held company on September 4,1998. An initial public offering took place on August 19,2004, in August 2015, Google announced plans to reorganize its various interests as a conglomerate called Alphabet Inc. Google, Alphabets leading subsidiary, will continue to be the company for Alphabets Internet interests. Upon completion of the restructure, Sundar Pichai became CEO of Google, replacing Larry Page, rapid growth since incorporation has triggered a chain of products, acquisitions, and partnerships beyond Googles core search engine. The company leads the development of the Android mobile operating system, the Google Chrome web browser, and Chrome OS, the new hardware chief, Rick Osterloh, stated, a lot of the innovation that we want to do now ends up requiring controlling the end-to-end user experience. Google has also experimented with becoming an Internet carrier, alexa, a company that monitors commercial web traffic, lists Google. com as the most visited website in the world. Several other Google services also figure in the top 100 most visited websites, including YouTube, Googles mission statement, from the outset, was to organize the worlds information and make it universally accessible and useful, and its unofficial slogan was Dont be evil. In October 2015, the motto was replaced in the Alphabet corporate code of conduct by the phrase Do the right thing, Google began in January 1996 as a research project by Larry Page and Sergey Brin when they were both PhD students at Stanford University in Stanford, California. They called this new technology PageRank, it determined a websites relevance by the number of pages, and the importance of those pages, Page and Brin originally nicknamed their new search engine BackRub, because the system checked backlinks to estimate the importance of a site. Originally, Google ran under Stanford Universitys website, with the domains google. stanford. edu, the domain name for Google was registered on September 15,1997, and the company was incorporated on September 4,1998. It was based in the garage of a friend in Menlo Park, craig Silverstein, a fellow PhD student at Stanford, was hired as the first employee. The first funding for Google was an August 1998 contribution of $100,000 from Andy Bechtolsheim, co-founder of Sun Microsystems, given before Google was incorporated. At least three other investors invested in 1998, Amazon. com founder Jeff Bezos, Stanford University computer science professor David Cheriton. Author Ken Auletta claims that each invested $250,000, early in 1999, Brin and Page decided they wanted to sell Google to Excite. They went to Excite CEO George Bell and offered to sell it to him for $1 million, vinod Khosla, one of Excites venture capitalists, talked the duo down to $750,000, but Bell still rejected it. Googles initial public offering took place five years later, on August 19,2004, at that time Larry Page, Sergey Brin, and Eric Schmidt agreed to work together at Google for 20 years, until the year 2024
8.
Amazon (company)
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Amazon. com, also called Amazon, is an American electronic commerce and cloud computing company that was founded on July 5,1994, by Jeff Bezos and is based in Seattle, Washington. It is the largest Internet-based retailer in the world by total sales, the company also produces consumer electronics—notably, Kindle e-readers, Fire tablets, Fire TV, and Echo—and is the worlds largest provider of cloud infrastructure services. Amazon also sells certain low-end products like USB cables under its in-house brand AmazonBasics. Amazon has separate retail websites for the United States, the United Kingdom, Ireland, France, Canada, Germany, Italy, Spain, Netherlands, Australia, Brazil, Japan, China, India, and Mexico. Amazon also offers international shipping to other countries for some of its products. In 2016, Dutch, Polish, and Turkish language versions of the German Amazon website were launched. In 2015, Amazon surpassed Walmart as the most valuable retailer in the United States by market capitalization, in 1994, Bezos left his employment as vice-president of D. E. Shaw & Co. a Wall Street firm and moved to Seattle. He began to work on a plan for what would eventually become Amazon. com. Bezos incorporated the company as Cadabra on July 5,1994, Bezos changed the name to Amazon a year later after a lawyer misheard its original name as cadaver. In September 1994, Bezos purchased the URL Relentless. com and briefly considered naming his online store Relentless, the domain is still owned by Bezos and still redirects to the retailer. The company went online as Amazon. com in 1995, Bezos placed a premium on his head start in building a brand, telling a reporter, Theres nothing about our model that cant be copied over time. But you know, McDonalds got copied, and it still built a huge, multibillion-dollar company. A lot of it comes down to the brand name, brand names are more important online than they are in the physical world. Additionally, a beginning with A was preferential due to the probability it would occur at the top of any list that was alphabetized. Since June 19,2000, Amazons logotype has featured a curved arrow leading from A to Z, representing that the company carries every product from A to Z, with the arrow shaped like a smile. After reading a report about the future of the Internet that projected annual Web commerce growth at 2, 300% and he narrowed the list to what he felt were the five most promising products, which included, compact discs, computer hardware, computer software, videos and books. Amazon was founded in the garage of Bezos home in Bellevue, the company began as an online bookstore, an idea spurred off with discussion with John Ingram of Ingram Book, along with Keyur Patel who still holds a stake in Amazon. Amazon was able to access books at wholesale from Ingram, in the first two months of business, Amazon sold to all 50 states and over 45 countries
9.
Internet Protocol
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The Internet Protocol is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet, IP has the task of delivering packets from the source host to the destination host solely based on the IP addresses in the packet headers. For this purpose, IP defines packet structures that encapsulate the data to be delivered and it also defines addressing methods that are used to label the datagram with source and destination information. The Internet protocol suite is often referred to as TCP/IP. The first major version of IP, Internet Protocol Version 4, is the dominant protocol of the Internet and its successor is Internet Protocol Version 6. The Internet Protocol is responsible for addressing hosts and for routing datagrams from a source host to a destination host across one or more IP networks. For this purpose, the Internet Protocol defines the format of packets, each datagram has two components, a header and a payload. The IP header is tagged with the source IP address, the destination IP address, the payload is the data that is transported. This method of nesting the data payload in a packet with a header is called encapsulation, IP addressing entails the assignment of IP addresses and associated parameters to host interfaces. The address space is divided into networks and subnetworks, involving the designation of network or routing prefixes, IP routing is performed by all hosts, as well as routers, whose main function is to transport packets across network boundaries. Routers communicate with one another via specially designed routing protocols, either interior gateway protocols or exterior gateway protocols, IP routing is also common in local networks. For example, many Ethernet switches support IP multicast operations and these switches use IP addresses and Internet Group Management Protocol to control multicast routing but use MAC addresses for the actual routing. The versions currently relevant are IPv4 and IPv6, in May 1974, the Institute of Electrical and Electronic Engineers published a paper entitled A Protocol for Packet Network Intercommunication. The papers authors, Vint Cerf and Bob Kahn, described a protocol for sharing resources using packet switching among network nodes. A central control component of this model was the Transmission Control Program that incorporated both connection-oriented links and datagram services between hosts, the model became known as the Department of Defense Internet Model and Internet protocol suite, and informally as TCP/IP. IP versions 0 to 3 were experimental versions, used between 1977 and 1979, IEN26, dated February 1978 describes a version of the IP header that uses a 1-bit version field. IEN28, dated February 1978 describes IPv2, IEN41, dated June 1978 describes the first protocol to be called IPv4. The IP header is different from the modern IPv4 header, IEN44, dated June 1978 describes another version of IPv4, also with a header different from the modern IPv4 header
10.
Internet
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The Internet is the global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide. The origins of the Internet date back to research commissioned by the United States federal government in the 1960s to build robust, the primary precursor network, the ARPANET, initially served as a backbone for interconnection of regional academic and military networks in the 1980s. Although the Internet was widely used by academia since the 1980s, Internet use grew rapidly in the West from the mid-1990s and from the late 1990s in the developing world. In the two decades since then, Internet use has grown 100-times, measured for the period of one year, newspaper, book, and other print publishing are adapting to website technology, or are reshaped into blogging, web feeds and online news aggregators. The entertainment industry was initially the fastest growing segment on the Internet, the Internet has enabled and accelerated new forms of personal interactions through instant messaging, Internet forums, and social networking. Business-to-business and financial services on the Internet affect supply chains across entire industries, the Internet has no centralized governance in either technological implementation or policies for access and usage, each constituent network sets its own policies. The term Internet, when used to refer to the global system of interconnected Internet Protocol networks, is a proper noun. In common use and the media, it is not capitalized. Some guides specify that the word should be capitalized when used as a noun, the Internet is also often referred to as the Net, as a short form of network. Historically, as early as 1849, the word internetted was used uncapitalized as an adjective, the designers of early computer networks used internet both as a noun and as a verb in shorthand form of internetwork or internetworking, meaning interconnecting computer networks. The terms Internet and World Wide Web are often used interchangeably in everyday speech, however, the World Wide Web or the Web is only one of a large number of Internet services. The Web is a collection of interconnected documents and other web resources, linked by hyperlinks, the term Interweb is a portmanteau of Internet and World Wide Web typically used sarcastically to parody a technically unsavvy user. The ARPANET project led to the development of protocols for internetworking, the third site was the Culler-Fried Interactive Mathematics Center at the University of California, Santa Barbara, followed by the University of Utah Graphics Department. In an early sign of growth, fifteen sites were connected to the young ARPANET by the end of 1971. These early years were documented in the 1972 film Computer Networks, early international collaborations on the ARPANET were rare. European developers were concerned with developing the X.25 networks, in December 1974, RFC675, by Vinton Cerf, Yogen Dalal, and Carl Sunshine, used the term internet as a shorthand for internetworking and later RFCs repeated this use. Access to the ARPANET was expanded in 1981 when the National Science Foundation funded the Computer Science Network, in 1982, the Internet Protocol Suite was standardized, which permitted worldwide proliferation of interconnected networks.5 Mbit/s and 45 Mbit/s. Commercial Internet service providers emerged in the late 1980s and early 1990s, the ARPANET was decommissioned in 1990
11.
Local area network
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By contrast, a wide area network, not only covers a larger geographic distance, but also generally involves leased telecommunication circuits or Internet links. An even greater contrast is the Internet, which is a system of globally connected business, Ethernet and Wi-Fi are the two most common transmission technologies in use for local area networks. Historical technologies include ARCNET, Token ring, and AppleTalk, the increasing demand and use of computers in universities and research labs in the late 1960s generated the need to provide high-speed interconnections between computer systems. A1970 report from the Lawrence Radiation Laboratory detailing the growth of their Octopus network gave an indication of the situation. A number of experimental and early commercial LAN technologies were developed in the 1970s, Cambridge Ring was developed at Cambridge University starting in 1974. Ethernet was developed at Xerox PARC in 1973–1975, and filed as U. S, in 1976, after the system was deployed at PARC, Robert Metcalfe and David Boggs published a seminal paper, Ethernet, Distributed Packet-Switching for Local Computer Networks. ARCNET was developed by Datapoint Corporation in 1976 and announced in 1977 and it had the first commercial installation in December 1977 at Chase Manhattan Bank in New York. The initial driving force for networking was generally to share storage and printers, there was much enthusiasm for the concept and for several years, from about 1983 onward, computer industry pundits would regularly declare the coming year to be, “The year of the LAN”. In practice, the concept was marred by proliferation of incompatible physical layer and network protocol implementations, typically, each vendor would have its own type of network card, cabling, protocol, and network operating system. Netware dominated the personal computer LAN business from early after its introduction in 1983 until the mid-1990s when Microsoft introduced Windows NT Advanced Server, of the competitors to NetWare, only Banyan Vines had comparable technical strengths, but Banyan never gained a secure base. During the same period, Unix workstations were using TCP/IP networking, early LAN cabling had generally been based on various grades of coaxial cable. This led to the development of 10BASE-T and structured cabling which is still the basis of most commercial LANs today, while fiber-optic cabling is common for links between switches, use of fiber to the desktop is rare. Many LANs use wireless technologies that are built into Smartphones, tablet computers, in a wireless local area network, users may move unrestricted in the coverage area. Wireless networks have become popular in residences and small businesses, because of their ease of installation, guests are often offered Internet access via a hotspot service. Network topology describes the layout of interconnections between devices and network segments, at the data link layer and physical layer, a wide variety of LAN topologies have been used, including ring, bus, mesh and star. At the higher layers, NetBEUI, IPX/SPX, AppleTalk and others were once common, simple LANs generally consist of cabling and one or more switches. A switch can be connected to a router, cable modem, a LAN can include a wide variety of other network devices such as firewalls, load balancers, and network intrusion detection. LANs can maintain connections with other LANs via leased lines, leased services, depending on how the connections are established and secured, and the distance involved, such linked LANs may also be classified as a metropolitan area network or a wide area network
12.
URL
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A Uniform Resource Locator, commonly informally termed a web address is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it. A URL is a type of Uniform Resource Identifier, although many people use the two terms interchangeably. A URL implies the means to access a resource and is denoted by a protocol or an access mechanism. Thus http, //www. example. com is an URL, URLs occur most commonly to reference web pages, but are also used for file transfer, email, database access, and many other applications. Most web browsers display the URL of a web page above the page in an address bar, a typical URL could have the form http, //www. example. com/index. html, which indicates a protocol, a hostname, and a file name. The format combines the pre-existing system of names with file path syntax. Conventions already existed where server names could be prefixed to complete file paths, every HTTP URL conforms to the syntax of a generic URI. Although schemes are case-insensitive, the form is lowercase and documents that specify schemes must do so with lowercase letters. It is followed by a colon, examples of popular schemes include http, ftp, mailto, file, data, and irc. URI schemes should be registered with the Internet Assigned Numbers Authority, two slashes, This is required by some schemes and not required by some others. When the authority component is absent, the path component cannot begin with two slashes, iPv4 addresses must be in dot-decimal notation, and IPv6 addresses must be enclosed in brackets. An optional port number, separated from the hostname by a colon A path, which contains data, usually organized in hierarchical form, such a sequence may resemble or map exactly to a file system path, but does not always imply a relation to one. The path must begin with a single slash if an authority part was present, and may also if one was not, but must not begin with a double slash. The path is defined, though the defined path may be empty An optional query, separated from the preceding part by a question mark. Its syntax is not well defined, but by convention is most often a sequence of attribute–value pairs separated by a delimiter, an optional fragment, separated from the preceding part by a hash. The fragment contains a fragment identifier providing direction to a secondary resource, when the primary resource is an HTML document, the fragment is often an id attribute of a specific element, and web browsers will scroll this element into view. A web browser will usually dereference a URL by performing an HTTP request to the specified host, URLs using the https scheme require that requests and responses will be made over a secure connection to the website. Internet users are distributed throughout the world using a variety of languages and alphabets
13.
Social networking service
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Most social network services are web-based and provide means for users to interact over the Internet, such as by e-mail and instant messaging and online forums. Social networking sites allow users to share ideas, digital photos and videos, posts, depending on the social media platform, members may be able to contact any other member. In other cases, members can contact anyone they have a connection to, and subsequently anyone that contact has a connection to, LinkedIn, a career social networking service, generally requires that a member personally know another member in real life before they contact them online. Some services require members to have a connection to contact other members. The main types of social networking services are those that contain category places, means to connect with friends, there have been attempts to standardize these services to avoid the need to duplicate entries of friends and interests. A study reveals that India has recorded worlds largest growth in terms of media users in 2013. A2013 survey found that 73% of U. S. adults use social networking sites, the variety and evolving range of stand-alone and built-in social networking services in the online space introduces a challenge of definition. Furthermore, the idea that these services are defined by their ability to bring people together provides too broad a definition, such a broad definition would suggest that the telegraph and telephone were social networking services – not the Internet technologies scholars are intending to describe. The terminology is unclear, with some referring to social networking services as social media. The potential for computer networking to facilitate newly improved forms of computer-mediated social interaction was suggested early on, efforts to support social networks via computer-mediated communication were made in many early online services, including Usenet, ARPANET, LISTSERV, and bulletin board services. Many prototypical features of social networking sites were present in online services such as America Online, Prodigy, CompuServe, ChatNet. Early social networking on the World Wide Web began in the form of generalized online communities such as Theglobe. com, Geocities, some communities – such as Classmates. com – took a different approach by simply having people link to each other via email addresses. In the late 1990s, user profiles became a feature of social networking sites, allowing users to compile lists of friends. New social networking methods were developed by the end of the 1990s and it also became one of the first companies to profit from the sale of virtual goods. Friendster was followed by MySpace and LinkedIn a year later, friendster became very popular in the Pacific Islands. Orkut became the first popular social networking service in Brazil and quickly grew in popularity in India, attesting to the rapid increase in social networking sites popularity, by 2005, it was reported that Myspace was getting more page views than Google. Facebook, launched in 2004, became the largest social networking site in the world in early 2009, Facebook was first introduced as a Harvard social networking site, expanding to other universities and eventually, anyone. The term social media was introduced and soon became widespread, web-based social networking services make it possible to connect people who share interests and activities across political, economic, and geographic borders
14.
World Wide Web
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The World Wide Web is an information space where documents and other web resources are identified by Uniform Resource Locators, interlinked by hypertext links, and can be accessed via the Internet. English scientist Tim Berners-Lee invented the World Wide Web in 1989 and he wrote the first web browser computer program in 1990 while employed at CERN in Switzerland. The Web browser was released outside of CERN in 1991, first to research institutions starting in January 1991. The World Wide Web has been central to the development of the Information Age and is the primary tool billions of people use to interact on the Internet, Web pages are primarily text documents formatted and annotated with Hypertext Markup Language. In addition to formatted text, web pages may contain images, video, audio, embedded hyperlinks permit users to navigate between web pages. Multiple web pages with a theme, a common domain name. Website content can largely be provided by the publisher, or interactive where users contribute content or the content depends upon the user or their actions, websites may be mostly informative, primarily for entertainment, or largely for commercial, governmental, or non-governmental organisational purposes. In the 2006 Great British Design Quest organised by the BBC and the Design Museum, Tim Berners-Lees vision of a global hyperlinked information system became a possibility by the second half of the 1980s. By 1985, the global Internet began to proliferate in Europe, in 1988 the first direct IP connection between Europe and North America was made and Berners-Lee began to openly discuss the possibility of a web-like system at CERN. Such a system, he explained, could be referred to using one of the meanings of the word hypertext. At this point HTML and HTTP had already been in development for two months and the first Web server was about a month from completing its first successful test. While the read-only goal was met, accessible authorship of web content took longer to mature, with the concept, WebDAV, blogs, Web 2.0. The proposal was modelled after the SGML reader Dynatext by Electronic Book Technology, a NeXT Computer was used by Berners-Lee as the worlds first web server and also to write the first web browser, WorldWideWeb, in 1990. By Christmas 1990, Berners-Lee had built all the necessary for a working Web, the first web browser. The first web site, which described the project itself, was published on 20 December 1990, jones stored it on a magneto-optical drive and on his NeXT computer. On 6 August 1991, Berners-Lee published a summary of the World Wide Web project on the newsgroup alt. hypertext. This date is confused with the public availability of the first web servers. The first server outside Europe was installed at the Stanford Linear Accelerator Center in Palo Alto, California, accounts differ substantially as to the date of this event
15.
Toy block
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Toy blocks are wooden, plastic, or foam pieces of various shapes and colors that are used as construction toys. Sometimes toy blocks depict letters of the alphabet,1798, Witold Rybczynski has found that the earliest mention of building bricks for children appears in Maria and R. L. Edgeworths Practical Education. Called rational toys, blocks were intended to teach children about gravity and physics,1820, The first large-scale production of blocks was in the Williamsburg area of Brooklyn by S. L.1837, Friedrich Fröbel invented a preschool educational institution Kindergarten. For that, he designed ten Froebel Gifts based on building blocks principles,1850, During the mid-nineteenth century, Henry Cole wrote a series of children’s books. Coles A book of stories from The Home Treasury included a box of terracotta toy blocks and,2003, National Toy Hall of Fame at the Strong Museum, inducted ABC blocks into their collection, granting it the title of one of Americas toys of national significance. Physical benefits, toy blocks build strength in a childs fingers and hands and they also help educate children in different shapes. Social benefits, block play encourages children to friends and cooperate. Blocks are a benefit for the children because they encourage interaction and imagination, creativity can be a combined action that is important for social play. Intellectual benefits, children can develop their vocabularies as they learn to describe sizes, shapes. Math skills are developed through the process of grouping, adding, experiences with gravity, balance, and geometry learned from toy blocks also provide intellectual stimulation. Creative benefits, children receive creative stimulation by making their own designs with blocks, anchor Stone Blocks Unit block is a popular standardized wooden toy block. Kapla and KEVA Planks are wooden block construction toys, LEGO is a line of unique plastic building bricks that interlock for virtually endless combinations. Lincoln Logs is a toy consisting of notched miniature logs, stickle bricks is a plastic construction toy primarily intended for toddlers. Froebel Gifts are a range of educational materials first used in the original Kindergarten, montessori sensorial materials are a range of educational materials including wooden blocks. Tinkertoys consists of rods and wheels, rasti is an Argentine toy block. Tente is a Spanish toy block, zometool is a USA-made system of advanced building blocks
16.
Document
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A document is a written, drawn, presented, or memorialized representation of thought. The word originates from the Latin documentum, which denotes a teaching or lesson, in the past the word was usually used to denote a written proof useful as evidence of a truth or fact. In the computer age, document usually denotes a primarily textual computer file, including its structure and format, e. g. fonts, colors, contemporarily, document is not defined by its transmission medium, e. g. paper, given the existence of electronic documents. Documentation is distinct because it has more denotations than document, the concept of document has been defined as any concrete or symbolic indication, preserved or recorded, for reconstructing or for proving a phenomenon, whether physical or mental. The shift to digital technology would seem to make this even more important. Levys thoughtful analyses have shown that an emphasis on the technology of digital documents has impeded our understanding of digital documents as documents. A conventional document, such as a message or a technical report, exists physically in digital technology as a string of bits. As an object of study, it has made into a document. It has become physical evidence by those who study it, template, Citation is problematic and should be verified. The classic example provided by Suzanne Briet is an antelope, An antelope running wild on the plains of Africa should not be considered a document she rules. But if it were to be captured, taken to a zoo and made an object of study and it has become physical evidence being used by those who study it. Indeed, scholarly articles written about the antelope are secondary documents and this opinion has been interpreted as an early expression of actor–network theory. Documents are sometimes classified as secret, private, or public and they may also be described as drafts or proofs. When a document is copied, the source is denominated the original, standards are accepted for specific applications in various fields, e. g. Academia, manuscript, thesis, paper, and journal, government, law, and politics, application, brief, certificate, commission, constitutional document, form, gazette, identity document, license, summons, and white paper. Such standard documents can be drafted based on a template, the page layout of a document is the manner in which information is graphically arranged in the space of the document, e. g. on a page. If the appearance of the document is of concern, page layout is generally the responsibility of a graphic designer, typography concerns the design of letter and symbol forms and their physical arrangement in the document. Information design concerns the communication of information, especially in industrial documents
17.
Plain text
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In computing, plain text is the data that represent only characters of readable material but not its graphical representation nor other objects. It may also include a number of characters that control simple arrangement of text. Plain text is different from formatted text, where information is included. The encoding has traditionally been either ASCII, sometimes EBCDIC, unicode-based encodings such as UTF-8 and UTF-16 are gradually replacing the older ASCII derivatives limited to 7 or 8 bit codes. Files that contain markup or other meta-data are generally considered plain-text, the use of plain text rather than bit-streams to express markup, enables files to survive much better in the wild, in part by making them largely immune to computer architecture incompatibilities. According to The Unicode Standard, Plain text is a sequence of character codes. Styled text, also known as rich text, is any text representation containing plain text completed by such as a language identifier, font size, color. For instance, Rich text such as SGML, RTF, HTML, XML, wiki markup, according to The Unicode Standard, plain text has two main properties in regard to rich text, plain text is the underlying content stream to which formatting can be applied. Plain text is public, standardized, and universally readable, Plain text represents the basic, interchangeable content of text. Plain text represents character content only, not its appearance and it can be displayed in a variety of ways and requires a rendering process to make it visible with a particular appearance. If the same plain text sequence is given to disparate rendering processes, instead, the disparate rendering processes are simply required to make the text legible according to the intended reading. This legibility criterion constrains the range of possible appearances, the relationship between appearance and content of plain text may be summarized as follows, Plain text must contain enough information to permit the text to be rendered legibly, and nothing more. The Unicode Standard encodes plain text, the distinction between plain text and other forms of data in the same data stream is the function of a higher-level protocol and is not specified by the Unicode Standard itself. The purpose of using plain text today is primarily independence from programs that require their own special encoding or formatting or file format. Plain text files can be opened, read, and edited with countless text editors, a command-line interface allows people to give commands in plain text and get a response, also in plain text. Plain text files are almost universal in programming, a code file containing instructions in a programming language is almost always a plain text file. Plain text is commonly used for configuration files, which are read for saved settings at the startup of a program. Plain text is used for much e-mail, a comment, a. txt file, or a TXT Record generally contains only plain text intended for humans to read
18.
HTML
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Hypertext Markup Language is the standard markup language for creating web pages and web applications. With Cascading Style Sheets and JavaScript it forms a triad of cornerstone technologies for the World Wide Web, Web browsers receive HTML documents from a webserver or from local storage and render them into multimedia web pages. HTML describes the structure of a web page semantically and originally included cues for the appearance of the document, HTML elements are the building blocks of HTML pages. With HTML constructs, images and other objects, such as interactive forms and it provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes and other items. HTML elements are delineated by tags, written using angle brackets, tags such as <img /> and <input /> introduce content into the page directly. Include explicit close tags for elements that permit content but are left empty, by carefully following the W3Cs compatibility guidelines, a user agent should be able to interpret the document equally as HTML or XHTML. For documents that are XHTML1.0 and have made compatible in this way. When delivered as XHTML, browsers should use an XML parser, HTML4 defined three different versions of the language, Strict, Transitional and Frameset. The Transitional and Frameset versions allow for presentational markup, which is omitted in the Strict version, instead, cascading style sheets are encouraged to improve the presentation of HTML documents. Because XHTML1 only defines an XML syntax for the language defined by HTML4, as this list demonstrates, the loose versions of the specification are maintained for legacy support. However, contrary to popular misconceptions, the move to XHTML does not imply a removal of this legacy support, rather the X in XML stands for extensible and the W3C is modularizing the entire specification and opening it up to independent extensions. The primary achievement in the move from XHTML1.0 to XHTML1.1 is the modularization of the entire specification, the strict version of HTML is deployed in XHTML1.1 through a set of modular extensions to the base XHTML1.1 specification. Likewise, someone looking for the loose or frameset specifications will find similar extended XHTML1.1 support, the modularization also allows for separate features to develop on their own timetable. So for example, XHTML1.1 will allow quicker migration to emerging XML standards such as MathML, in summary, the HTML4 specification primarily reined in all the various HTML implementations into a single clearly written specification based on SGML. XHTML1.0, ported this specification, as is, next, XHTML1.1 takes advantage of the extensible nature of XML and modularizes the whole specification. XHTML2.0 was intended to be the first step in adding new features to the specification in a standards-body-based approach. The WHATWG considers their work as living standard HTML for what constitutes the state of the art in major browser implementations by Apple, Google, Mozilla, Opera, hTML5 is specified by the HTML Working Group of the W3C following the W3C process. HTML lacks some of the found in earlier hypertext systems, such as source tracking, fat links
19.
XHTML
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Extensible Hypertext Markup Language is part of the family of XML markup languages. It mirrors or extends versions of the widely used Hypertext Markup Language, XHTML documents are well-formed and may therefore be parsed using standard XML parsers, unlike HTML, which requires a lenient HTML-specific parser. XHTML1.0 became a World Wide Web Consortium Recommendation on January 26,2000, XHTML1.1 became a W3C Recommendation on May 31,2001. The standard known as XHTML5 is being developed as an XML adaptation of the HTML5 specification, XHTML1.0 is a reformulation of the three HTML4 document types as applications of XML1.0. The World Wide Web Consortium also continues to maintain the HTML4.01 Recommendation, and the specifications for HTML5 and XHTML5 are being actively developed. In the current XHTML1.0 Recommendation document, as published and revised to August 2002, by migrating to XHTML today, content developers can enter the XML world with all of its attendant benefits, while still remaining confident in their contents backward and future compatibility. However, in 2005, the Web Hypertext Application Technology Working Group formed, independently of the W3C, the WHATWG eventually began working on a standard that supported both XML and non-XML serializations, HTML5, in parallel to W3C standards such as XHTML2. In 2007, the W3Cs HTML working group voted to officially recognize HTML5, in 2009, the W3C allowed the XHTML2 Working Groups charter to expire, acknowledging that HTML5 would be the sole next-generation HTML standard, including both XML and non-XML serializations. Of the two serializations, the W3C suggests that most authors use the HTML syntax, rather than the XHTML syntax, XHTML was developed to make HTML more extensible and increase interoperability with other data formats. In addition, browsers were forgiving of errors in HTML, and most websites were displayed despite technical errors in the markup, the XML standard, approved in 1998, provided a simpler data format closer in simplicity to HTML4. By using namespaces, XHTML documents could provide extensibility by including fragments from other XML-based languages such as Scalable Vector Graphics, finally, the renewed work would provide an opportunity to divide HTML into reusable components and clean up untidy parts of the language. There are various differences between XHTML and HTML, the Document Object Model is a tree structure that represents the page internally in applications, and XHTML and HTML are two different ways of representing that in markup. Both are less expressive than the DOM, and generally XHTMLs XML syntax is a more expressive than HTML. First off, one source of differences is immediate, XHTML uses an XML syntax, secondly however, because the expressible contents of the DOM in syntax are slightly different, there are some changes in actual behavior between the two models. XML is case-sensitive for element and attribute names, while HTML is not, there are numerous other technical requirements surrounding namespaces and precise parsing of whitespace and certain characters and elements. The exact parsing of HTML in practice has been undefined until recently, see the HTML5 specification for full details, Second, in contrast to these minor syntactical differences, there are some behavioral differences, mostly arising from the underlying differences in serialization. For example, Most prominently, behavior on parse errors differ, a fatal parse error in XML causes document processing to be aborted. Most content requiring namespaces will not work in HTML, except the built-in support for SVG, javaScript processing is a little different in XHTML, with minor changes in case sensitivity to some functions, and further precautions to restrict processing to well-formed content
20.
HTML element
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An HTML element is an individual component of an HTML document or web page, once this has been parsed into the Document Object Model. HTML is composed of a tree of HTML nodes, such as text nodes, each node can have HTML attributes specified. Nodes can also have content, including nodes and text. Many HTML nodes represent semantics, or meaning, for example, the title node represents the title of the document. HTML documents are delivered as documents and these are then parsed, which turns them into the Document Object Model internal representation, within the web browser. Presentation by the web browser, such as screen rendering or access by JavaScript, is performed on this internal model. Early HTML documents, and to an extent today, were largely invalid HTML. The parsing process was required to fix-up these errors, as best it could. The resultant model was not correct, but it would at least be valid. A valid model was produced, no matter how bad the tag soup supplied had been, only in the rarest cases would the parser abandon parsing altogether. Elements and tags are terms that are widely confused, HTML documents contain tags, but do not contain the elements. The elements are generated after the parsing step, from these tags. As is generally understood, the position of an element is indicated as spanning from a tag, possibly including some child content. This is the case for many, but not all, elements within an HTML document, as HTML is based on SGML, its parsing also depends on the use of a DTD, specifically an HTML DTD such as that for HTML4.01. The DTD specifies which element types are possible and it specifies the valid combinations in which they may appear in a document. It is part of general SGML behaviour that where only one structure is possible. As a simple example, the <p> start tag indicating the start of a paragraph element should be closed by an end tag. Also the DTD states that paragraph elements cannot be nested, SGML is complex, which has limited its widespread adoption and understanding
21.
Hypertext Transfer Protocol
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The Hypertext Transfer Protocol is an application protocol for distributed, collaborative, and hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web, Hypertext is structured text that uses logical links between nodes containing text. HTTP is the protocol to exchange or transfer hypertext, development of HTTP was initiated by Tim Berners-Lee at CERN in 1989. Standards development of HTTP was coordinated by the Internet Engineering Task Force and the World Wide Web Consortium, culminating in the publication of a series of Requests for Comments. The first definition of HTTP/1.1, the version of HTTP in common use, occurred in RFC2068 in 1997, although this was obsoleted by RFC2616 in 1999 and then again by RFC7230 and family in 2014. A later version, the successor HTTP/2, was standardized in 2015, HTTP functions as a request–response protocol in the client–server computing model. A web browser, for example, may be the client, the client submits an HTTP request message to the server. The server, which provides resources such as HTML files and other content, or performs other functions on behalf of the client, the response contains completion status information about the request and may also contain requested content in its message body. A web browser is an example of a user agent, other types of user agent include the indexing software used by search providers, voice browsers, mobile apps, and other software that accesses, consumes, or displays web content. HTTP is designed to permit intermediate network elements to improve or enable communications between clients and servers, high-traffic websites often benefit from web cache servers that deliver content on behalf of upstream servers to improve response time. Web browsers cache previously accessed web resources and reuse them when possible to network traffic. HTTP proxy servers at private network boundaries can facilitate communication for clients without a globally routable address, HTTP is an application layer protocol designed within the framework of the Internet protocol suite. Its definition presumes an underlying and reliable transport layer protocol, however HTTP can be adapted to use unreliable protocols such as the User Datagram Protocol, for example in HTTPU and Simple Service Discovery Protocol. HTTP resources are identified and located on the network by Uniform Resource Locators, using the Uniform Resource Identifiers schemes http, uRIs and hyperlinks in HTML documents form inter-linked hypertext documents. HTTP/1.1 is a revision of the original HTTP, in HTTP/1.0 a separate connection to the same server is made for every resource request. HTTP/1.1 can reuse a connection multiple times to download images, scripts, stylesheets, HTTP/1.1 communications therefore experience less latency as the establishment of TCP connections presents considerable overhead. Tim Berners-Lee and his team at CERN are credited with inventing the original HTTP along with HTML and the technology for a web server. Berners-Lee first proposed the WorldWideWeb project in 1989—now known as the World Wide Web, the first version of the protocol had only one method, namely GET, which would request a page from a server
22.
HTTPS
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HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol within a connection encrypted by Transport Layer Security, or its predecessor, the main motivation for HTTPS is authentication of the visited website and protection of the privacy and integrity of the exchanged data. In its popular deployment on the internet, HTTPS provides authentication of the website and associated web server with one is communicating. Additionally, it provides bidirectional encryption of communications between a client and server, which protects against eavesdropping and tampering with or forging the contents of the communication. Historically, HTTPS connections were used for payment transactions on the World Wide Web, e-mail. The HTTPS uniform resource identifier, scheme has identical syntax to the standard HTTP scheme, however, HTTPS signals the browser to use an added encryption layer of SSL/TLS to protect the traffic. SSL/TLS is especially suited for HTTP, since it can provide some protection even if one side of the communication is authenticated. This is the case with HTTP transactions over the Internet, where only the server is authenticated. HTTPS creates a channel over an insecure network. This ensures reasonable protection from eavesdroppers and man-in-the-middle attacks, provided that adequate cipher suites are used, because HTTPS piggybacks HTTP entirely on top of TLS, the entirety of the underlying HTTP protocol can be encrypted. This includes the request URL, query parameters, headers, however, because host addresses and port numbers are necessarily part of the underlying TCP/IP protocols, HTTPS cannot protect their disclosure. Web browsers know how to trust HTTPS websites based on certificate authorities that come pre-installed in their software, Certificate authorities are in this way being trusted by web browser creators to provide valid certificates. The user trusts the authority to vouch only for legitimate websites. The website provides a valid certificate, which means it was signed by a trusted authority, the certificate correctly identifies the website. The user trusts that the protocols encryption layer is sufficiently secure against eavesdroppers, HTTPS is especially important over insecure networks, as anyone on the same local network can packet-sniff and discover sensitive information not protected by HTTPS. Additionally, many free to use and even paid for WLAN networks engage in packet injection in order to serve their own ads on webpages, however, this can be exploited maliciously in many ways, such as injecting malware onto webpages and stealing users private information. This is one reason why the Electronic Frontier Foundation and the Tor project started the development of HTTPS Everywhere, while metadata about individual pages that a user visits is not sensitive, when combined, they can reveal a lot about the user and compromise the users privacy. Deploying HTTPS also allows the use of HTTP/2, that are new generations of HTTP, designed to reduce load times
23.
Web browser
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A web browser is a software application for retrieving, presenting and traversing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier that may be a web page, image, hyperlinks present in resources enable users easily to navigate their browsers to related resources. Although browsers are primarily intended to use the World Wide Web, the most popular web browsers are Google Chrome, Microsoft Edge, Safari, Opera and Firefox. The first web browser was invented in 1990 by Sir Tim Berners-Lee, Berners-Lee is the director of the World Wide Web Consortium, which oversees the Webs continued development, and is also the founder of the World Wide Web Foundation. His browser was called WorldWideWeb and later renamed Nexus, the first commonly available web browser with a graphical user interface was Erwise. The development of Erwise was initiated by Robert Cailliau, andreesens browser sparked the internet boom of the 1990s. The introduction of Mosaic in 1993 – one of the first graphical web browsers – led to an explosion in web use, Microsoft responded with its Internet Explorer in 1995, also heavily influenced by Mosaic, initiating the industrys first browser war. Bundled with Windows, Internet Explorer gained dominance in the web browser market, Internet Explorer usage share peaked at over 95% by 2002. Opera debuted in 1996, it has never achieved widespread use and it is also available on several other embedded systems, including Nintendos Wii video game console. In 1998, Netscape launched what was to become the Mozilla Foundation in an attempt to produce a competitive browser using the open source software model, as of August 2011, Firefox has a 28% usage share. Apples Safari had its first beta release in January 2003, as of April 2011, the most recent major entrant to the browser market is Chrome, first released in September 2008. Chromes take-up has increased year by year, by doubling its usage share from 8% to 16% by August 2011. This increase seems largely to be at the expense of Internet Explorer, in December 2011, Chrome overtook Internet Explorer 8 as the most widely used web browser but still had lower usage than all versions of Internet Explorer combined. Chromes user-base continued to grow and in May 2012, Chromes usage passed the usage of all versions of Internet Explorer combined, by April 2014, Chromes usage had hit 45%. Internet Explorer was deprecated in Windows 10, with Microsoft Edge replacing it as the web browser. The ways that web browser makers fund their development costs has changed over time, the first web browser, WorldWideWeb, was a research project. In addition to being freeware, Netscape Navigator and Opera were also sold commercially, Internet Explorer, on the other hand, was bundled free with the Windows operating system, and therefore it was funded partly by the sales of Windows to computer manufacturers and direct to users. Internet Explorer also used to be available for the Mac, in this respect, IE may have contributed to Windows and Microsoft applications sales in another way, through lock-in to Microsofts browser
24.
Computer monitor
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A computer monitor or a computer display is an electronic visual display for computers. A monitor usually comprises the display device, circuitry, casing, the display device in modern monitors is typically a thin film transistor liquid crystal display or a flat panel LED display, while older monitors used a cathode ray tubes. It can be connected to the computer via VGA, DVI, HDMI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors, originally, computer monitors were used for data processing while television receivers were used for entertainment. From the 1980s onwards, computers have used for both data processing and entertainment, while televisions have implemented some computer functionality. The common aspect ratio of televisions, and computer monitors, has changed from 4,3 to 16,10, to 16,9. Early electronic computers were fitted with a panel of light bulbs where the state of each particular bulb would indicate the state of a particular register bit inside the computer. This allowed the operating the computer to monitor the internal state of the machine. As early monitors were only capable of displaying a limited amount of information. Instead, a printer was the primary output device, while the monitor was limited to keeping track of the programs operation. Multiple technologies have used for computer monitors. Until the 21st century most used cathode ray tubes but they have largely superseded by LCD monitors. The first computer monitors used cathode ray tubes, high-resolution CRT displays were developed for specialized military, industrial and scientific applications but they were far too costly for general use. Either computer could be connected to the terminals of an ordinary color TV set or used with a purpose-made CRT color monitor for optimum resolution. In 1984 IBM introduced the Enhanced Graphics Adapter which was capable of producing 16 colors and had a resolution of 640 x 350, by the end of the 1980s color CRT monitors that could clearly display 1024 x 768 pixels were widely available and increasingly affordable. During the following decade maximum display resolutions gradually increased and prices continued to fall, CRT technology remained dominant in the PC monitor market into the new millennium partly because it was cheaper to produce and offered viewing angles close to 180 degrees. CRTs still offer some image quality advantages over LCDs but improvements to the latter have made much less obvious. There are multiple technologies that have used to implement liquid crystal displays. Commonly, the laptop would be offered with an assortment of display options at increasing price points, monochrome
25.
Hyperlink
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In computing, a hyperlink, or simply a link, is a reference to data that the reader can directly follow either by clicking, tapping, or hovering. A hyperlink points to a document or to a specific element within a document. The text that is linked from is called anchor text, a software system that is used for viewing and creating hypertext is a hypertext system, and to create a hyperlink is to hyperlink. A user following hyperlinks is said to navigate or browse the hypertext, the document containing a hyperlink is known as its source document. For example, in a reference work such as Wikipedia, many words. Hyperlinks are often used to implement reference mechanisms such as tables of contents, footnotes, bibliographies, indexes, letters, in some hypertext hyperlinks can be bidirectional, they can be followed in two directions, so both ends act as anchors and as targets. More complex arrangements exist, such as many-to-many links, another possibility is transclusion, for which the link target is a document fragment that replaces the link anchor within the source document. Not only persons browsing the document follow hyperlinks, they may also be followed automatically by programs, a program that traverses the hypertext, following each hyperlink and gathering all the retrieved documents is known as a Web spider or crawler. An inline link displays remote content without the need for embedding the content, the remote content may be accessed with or without the user selecting the link. An inline link may display a modified version of the content, for instance, instead of an image, the full content will then usually be available on demand, as is the case with print publishing software – e. g. with an external link. This allows for file sizes and quicker response to changes when the full linked content is not needed. An anchor hyperlink is a bound to a portion of a document—generally text. For instance, it may also be a hot area in an image, one way to define it is by a list of coordinates that indicate its boundaries. For example, a map of Africa may have each country hyperlinked to further information about that country. A separate invisible hot area interface allows for swapping skins or labels within the hot areas without repetitive embedding of links in the various skin elements. Tim Berners-Lee saw the possibility of using hyperlinks to link any information to any information over the Internet. Hyperlinks were therefore integral to the creation of the World Wide Web, Web pages are written in the hypertext mark-up language HTML. w3. org to the URL for the page. The URL is followed by >, marking the end of the opening tag
26.
Site map
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A site map is a list of pages of a web site accessible to crawlers or users. It can be either a document in any form used as a tool for Web design, or a Web page that lists the pages on a website. Sitemaps make relationships between pages and other content components and it shows shape of information space in overview. Sitemaps can demonstrate organization, navigation, and labeling system, There are two popular versions of a site map. HTML sitemaps are designed for the user to help them find content on the page and this helps visitors and search engine bots find pages on the site. You cannot submit an HTML sitemap in Google Webmaster Tools as it is not a supported sitemap format. While some developers argue that site index is a more appropriately used term to relay page function, web visitors are used to seeing each term and generally associate both as one and the same. XML is a document structure and encoding standard used, amongst many other things, as the standard for webcrawlers to find, There is an example of an XML sitemap below. The instructions to the sitemap are given to the crawler bot by a Robots Text file, site maps can improve search engine optimization of a site by making sure that all the pages can be found. This is especially important if a site uses an access to content such as Adobe Flash or JavaScript menus that do not include HTML links. They also act as a navigation aid by providing an overview of a sites content at a single glance, Google introduced the Sitemaps protocol so web developers can publish lists of links from across their sites. The basic premise is that some sites have a number of dynamic pages that are only available through the use of forms. The Sitemap files contains URLs to these pages so that web crawlers can find them, Bing, Google, Yahoo and Ask now jointly support the Sitemaps protocol. Since Bing, Yahoo, Ask, and Google use the same protocol, Sitemaps do not guarantee all links will be crawled, and being crawled does not guarantee indexing. However, a Sitemap is still the best insurance for getting an engine to learn about your entire site. Google Webmaster Tools allow an owner to upload a sitemap that Google will crawl. On 1st Dec 2016 both Bing and Google confirmed that now support xml sitemaps up to 50MB in size while uncompressed. XML Sitemaps have replaced the older method of submitting to search engines by filling out a form on the search engines submission page, now web developers submit a Sitemap directly, or wait for search engines to find it
27.
Home page
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A home page is generally the main page a visitor navigating to a website from a web search engine will see, and it may also serve as a landing page to attract visitors. The home page is used to facilitate navigation to other pages on the site by providing links to prioritized and recent articles and pages, and possibly a search box. For example, a website may present headlines and first paragraphs of top stories, with links to full articles, in a dynamic web page that reflects the popularity. Meanwhile, other websites utilize the homepage to attract users to create an account, once they are logged in, the homepage may be redirected to their profile page. This may in turn be referred to as the home page. A website may have multiple pages, although most have one. Wikipedia, for example, has a page at wikipedia. org, as well as language-specific home pages, such as en. wikipedia. org. The majority of websites have a page with underlying content pages. The uniform resource locator of a page is most often the base-level domain name, such as https. Historically it may also be found at http, //domain. tld/index. html or http, //domain. tld/default. html, where tld refers to the top-level domain used by the website. If a home page has not been created for a web site, many web servers will default to display a list of files located in the sites directory and this list will include hyperlinks to the files, allowing for simple file sharing without maintaining a separate HTML file. A home page also refers to the first page that appears upon opening a web browser, sometimes called the start page and this start page can be a website, or it can be a page with various browser functions such as the display of thumbnails of frequently visited websites. Multiple websites can be set as a page, to open in different tabs. Some websites are intended to be used as start pages, such as iGoogle, My Yahoo. and MSN. com, and provide links to commonly used services such as webmail and online weather forecasts. In the early days of the World Wide Web in the first half of the 1990s, system administrators of such systems installed an HTTP server pointing its root directory to the directory containing the users accounts. On UNIX, the directory of an account is called home. The URL of the page is usually has the format https. Thus the term home page appeared and then spread to its current usage, a personal home page historically has served as a means of self-portrayal, job-related presentation, and pure enjoyment, giving way to professional advancement and social interaction
28.
Web content
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Web content is the textual, visual, or aural content that is encountered as part of the user experience on websites. It may include—among other things—text, images, sounds, videos, in Information Architecture for the World Wide Web, Lou Rosenfeld and Peter Morville write, We define content broadly as the stuff in your Web site. This may include documents, data, applications, e-services, images, audio and video files, personal Web pages, archived e-mail messages, and we include future stuff as well as present stuff. While the Internet began with a U. S, but it was not until Mosaic, the forerunner of the famous Netscape Navigator, appeared that the Internet become more than a file serving system. The use of hypertext, hyperlinks, and a model of sharing information, introduced with Mosaic and later Netscape, helped to define web content. Today, we largely categorize websites as being a type of website according to the content a website contains. When it was possible for any person to write and own a Mosaic page and it was possible for anyone to own a Web page or a home page which in many cases the website contained many physical pages in spite of being called a page. People often cited their home page to provide credentials, links to anything that a person supported, even though the web may be the resource we commonly use to get to particular locations online, many different protocols are invoked to access embedded information. When we are given an address, such as https, //www. youtube. com, we expect to see a range of web pages, but in each page we have embedded tool to watch video clips. Even though we may embed various protocols within web pages, the web page composed of HTML content is still the dominant way whereby we share content. And while there are many web pages with localized proprietary structure, blogs are a type of website that contain mainly web pages authored in HTML. Millions of people use online, a blog is now the new home page, that is. Blogs have become a powerful weapon used by content marketers who desire to increase their sites traffic, as well as. In fact, new research from Technorati shows that blogs now outrank social networks for consumer influence, Search engine sites are composed mainly of HTML content, but also has a typically structured approach to revealing information. A Search Engine Results Page displays a heading, usually the name of the engine itself. The list of web addresses are listed by their order of relevance according to the search query, searchers typically type in keywords or keyword phrases to find or search what they are looking for on the web. Discussion boards are composed of textual content organized by HTML or some variation that can be viewed in a web browser. The driving mechanism of a board is the fact that users are registered
29.
Academic journal
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An academic or scholarly journal is a periodical publication in which scholarship relating to a particular academic discipline is published. Academic journals serve as permanent and transparent forums for the presentation, scrutiny and they are usually peer-reviewed or refereed. Content typically takes the form of articles presenting original research, review articles, the term academic journal applies to scholarly publications in all fields, this article discusses the aspects common to all academic field journals. Upon receipt of an article, editors at the journal determine whether to reject the submission outright or begin the process of peer review. In the latter case, the submission becomes subject to review by scholars of the editors choosing who typically remain anonymous. Though these reports are confidential, some journals and publishers also practice public peer review. The editors either choose to reject the article, ask for a revision and resubmission, even accepted articles are often subjected to further editing by journal editorial staff before they appear in print. The peer review can take several weeks to several months. Review articles, also called reviews of progress, are checks on the published in journals. Some journals are devoted entirely to review articles, some contain a few in each issue, such reviews often cover the research from the preceding year, some for longer or shorter terms, some are devoted to specific topics, some to general surveys. Some journals are enumerative, listing all significant articles in a subject, others are selective. Yet others are evaluative, judging the state of progress in the subject field, some journals are published in series, each covering a complete subject field year, or covering specific fields through several years. Unlike original research articles, review articles tend to be solicited submissions and they are typically relied upon by students beginning a study in a given field, or for current awareness of those already in the field. Reviews of scholarly books are checks upon the books published by scholars, unlike articles. Journals typically have a book review editor determining which new books to review. If an outside scholar accepts the book review editors request for a book review, publishers send books to book review editors in the hope that their books will be reviewed. The length and depth of research book reviews varies much from journal to journal, as does the extent of textbook, an academic journals prestige is established over time, and can reflect many factors, some but not all of which are expressible quantitatively. In each academic discipline there are dominant journals that receive the largest number of submissions, yet, not only the largest journals are of excellent quality
30.
Internet forum
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An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages. They differ from chat rooms in that messages are often longer than one line of text, also, depending on the access level of a user or the forum set-up, a posted message might need to be approved by a moderator before it becomes visible. Forums have a set of jargon associated with them, example. A discussion forum is hierarchical or tree-like in structure, a forum can contain a number of subforums, within a forums topic, each new discussion started is called a thread, and can be replied to by as many people as so wish. Depending on the settings, users can be anonymous or have to register with the forum. On most forums, users do not have to log in to read existing messages, the modern forum originated from bulletin boards, and so-called computer conferencing systems, and are a technological evolution of the dialup bulletin board system. From a technological standpoint, forums or boards are web applications managing user-generated content, early Internet forums could be described as a web version of an electronic mailing list or newsgroup, allowing people to post messages and comment on other messages. Later developments emulated the different newsgroups or individual lists, providing more than one forum, Internet forums are prevalent in several developed countries. Japan posts the most with two million per day on their largest forum, 2channel. China also has millions of posts on forums such as Tianya Club. Some of the very first forum systems were the Planet-Forum system, developed in the beginning of the 1970-s, the EIES system, first operational in 1976, one of the first forum sites, and still active today, is Delphi Forums, once called Delphi. The service, with four members, dates to 1983. Forums perform a similar to that of dial-up bulletin board systems. Early web-based forums date back as far as 1994, with the WIT project from W3 Consortium and starting from this time, a sense of virtual community often develops around forums that have regular users. Technology, video games, sports, music, fashion, religion, and politics are popular areas for forum themes, Internet slang and image macros popular across the Internet are abundant and widely used in Internet forums. Forum software packages are available on the Internet and are written in a variety of programming languages, such as PHP, Perl, Java. The configuration and records of posts can be stored in files or in a database. Each package offers different features, from the most basic, providing text-only postings, to more advanced packages, offering multimedia support, many packages can be integrated easily into an existing website to allow visitors to post comments on articles
31.
Email
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Electronic mail, or email, is a method of exchanging digital messages between people using digital devices such as computers and mobile phones. Email first entered use in the 1960s and by the mid-1970s had taken the form now recognized as email. Email operates across computer networks, which today is primarily the Internet, some early email systems required the author and the recipient to both be online at the same time, in common with instant messaging. Todays email systems are based on a store-and-forward model, Email servers accept, forward, deliver, and store messages. Originally an ASCII text-only communications medium, Internet email was extended by Multipurpose Internet Mail Extensions to carry text in character sets. International email, with internationalized email addresses using UTF-8, has been standardized, the history of modern Internet email services reaches back to the early ARPANET, with standards for encoding email messages published as early as 1973. An email message sent in the early 1970s looks very similar to an email sent today. Email played an important part in creating the Internet, and the conversion from ARPANET to the Internet in the early 1980s produced the core of the current services, historically, the term electronic mail was used generically for any electronic document transmission. For example, several writers in the early 1970s used the term to describe fax document transmission, as a result, it is difficult to find the first citation for the use of the term with the more specific meaning it has today. This spelling also appears in most dictionaries, Mail was the form used in the original protocol standard, RFC524. The service is referred to as mail, and a piece of electronic mail is called a message. EMail is a form that has been used in RFCs for the Authors Address and is expressly required for historical reasons. E-mail is sometimes used, capitalizing the initial E as in similar abbreviations like E-piano, E-guitar, A-bomb, by 1968, AUTODIN linked more than 300 sites in several countries. With the introduction of MITs Compatible Time-Sharing System in 1961, multiple users could log in to a system from remote dial-up terminals. Informal methods of using this to pass messages were developed and expanded,1965 – MITs CTSS MAIL and it used the Unix mail client to send messages between system users. The concept was extended to communicate remotely over the Berkeley Network,1979 – EMAIL, an application written by Shiva Ayyadurai for the University of Medicine and Dentistry of New Jersey. 1979 – MH Message Handling System developed at RAND provided several tools for managing electronic mail on Unix, most of them only allowed communication between users logged into the same host or mainframe, although there might be hundreds or thousands of users within an organization. In the early 1980s, networked personal computers on LANs became increasingly important, server-based systems similar to the earlier mainframe systems were developed
32.
Stock market
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Examples of the latter include shares of private companies which are sold to investors through equity crowdfunding platforms. Stock exchanges list shares of equity as well as other security types, e. g. corporate bonds. Stocks can be categorised in various way, one way is by the country where the company is domiciled. S. At the close of 2012, the size of the stock market was about US$55 trillion. By country, the largest market was the United States, followed by Japan, as of 2015, there are a total of 60 stock exchanges in the world with a total market capitalization of $69 trillion. Of these, there are 16 exchanges with a capitalization of $1 trillion or more. Apart from the Australian Securities Exchange, these 16 exchanges are based in one of three continents, North America, Europe and Asia, a stock exchange is a place where, or an organization through which, individuals and organisations can trade stocks. Many large companies have their stock listed on a stock exchange and this makes the stock more liquid and thus more attractive to many investors. It may also act as a guarantor of settlement, other stocks may be traded over the counter, that is, through a dealer. Some large companies will have their stock listed on more than one exchange in different countries, Stock exchanges may also cover other types of securities, such as fixed interest securities or derivatives, which are more likely to be traded OTC. Trade in stock markets means the transfer for money of a stock or security from a seller to a buyer and this requires these two parties to agree on a price. Equities confer an ownership interest in a particular company and their buy or sell orders may be executed on their behalf by a stock exchange trader. Some exchanges are physical locations where transactions are carried out on a trading floor and this method is used in some stock exchanges and commodity exchanges, and involves traders shouting bid and offer prices. The other type of exchange has a network of computers where trades are made electronically. An example of such an exchange is the NASDAQ, a potential buyer bids a specific price for a stock, and a potential seller asks a specific price for the same stock. Buying or selling at the means you will accept any ask price or bid price for the stock. When the bid and ask prices match, a sale takes place, on a first-come, the purpose of a stock exchange is to facilitate the exchange of securities between buyers and sellers, thus providing a marketplace. The exchanges provide real-time trading information on the securities, facilitating price discovery
33.
Desktop computer
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A desktop computer is a personal computer designed for regular use at a single location on or near a desk or table due to its size and power requirements. The most common configuration has a case that houses the power supply, motherboard, disk storage, a keyboard and mouse for input, and a monitor, and, often. The case may be oriented horizontally or vertically and placed either underneath, beside, an all-in-one desktop computer typically combines the case and monitor in one unit. Early computers took up the space of a whole room, minicomputers generally fit into one or a few refrigerator-sized racks. The very first programmable calculator/computer was marketed in the half of the 1960s. More desktop models were introduced in 1971, leading to a model programmable in BASIC in 1972 and this one used a smaller version of a minicomputer design based on read-only memory and had small one-line LED alphanumeric displays. They could draw computer graphics with a plotter, over the course of the 1990s, desktop cases gradually became less common than the more-accessible tower cases that may be located on the floor under or beside a desk rather than on a desk. Not only do these tower cases had more room for expansion, Desktop cases, particularly the compact form factors, remain popular for corporate computing environments and kiosks. Some computer cases can be positioned either horizontally or upright. While desktops have long been the most common configuration for PCs, notably, while desktops were mainly produced in the United States, laptops had long been produced by contract manufacturers based in Asia, such as Foxconn. This shift led to the closure of the many desktop assembly plants in the United States by 2010, battery-powered portable computers had just 2% worldwide market share in 1986. However, laptops have become popular, both for business and personal use. Around 109 million notebook PCs shipped worldwide in 2007, a growth of 33% compared to 2006, in 2008, it was estimated that 145.9 million notebooks were sold, and that the number would grow in 2009 to 177.7 million. The third quarter of 2008 was the first time when worldwide notebook PC shipments exceeded desktops, the change in sales of form factors is due to the desktop iMac moving from affordable to upscale and subsequent releases are considered premium all-in-ones. The decades of development means that most people already own desktop computers that meet their needs and have no need of buying a new one merely to keep pace with advancing technology. Recently, some analysts have suggested that Windows 8 has actually hurt sales of PCs in 2012, the post-PC trend has seen a decline in the sales of desktop and laptop PCs. The decline has been attributed to increased power and applications of computing devices, namely smartphones. Among PC form factors, desktops remain a staple in the market but have lost popularity among home buyers
34.
Laptop
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Laptops are folded shut for transportation, and thus are suitable for mobile use. Although originally there was a distinction between laptops and notebooks, the former being bigger and heavier than the latter, as of 2014, there is often no longer any difference. Laptops are commonly used in a variety of settings, such as at work, in education, Internet surfing using sites such as YouTube and for personal multimedia, most 2016-era laptops also have integrated webcams and built-in microphones. Laptops can be powered either from a battery or by an external power supply from an AC adapter. Hardware specifications, such as the speed and memory capacity. Design elements, form factor, and construction can also vary significantly between models depending on intended use, as portable computers evolved into the modern laptop, they became widely used for a variety of purposes. The terms laptop and notebook are used interchangeably to describe a computer in English. Regardless of the etymology, by the late 1990s, the terms were interchangeable, as the personal computer became feasible in 1971, the idea of a portable personal computer soon followed. A personal, portable information manipulator was imagined by Alan Kay at Xerox PARC in 1968, the IBM Special Computer APL Machine Portable was demonstrated in 1973. This prototype was based on the IBM PALM processor, the IBM5100, the first commercially available portable computer, appeared in September 1975, and was based on the SCAMP prototype. As 8-bit CPU machines became widely accepted, the number of portables increased rapidly, the Osborne 1, released in 1981, used the Zilog Z80 and weighed 23.6 pounds. It had no battery, a 5 in CRT screen, in the same year the first laptop-sized portable computer, the Epson HX-20, was announced. The Epson had an LCD screen, a battery. Both Tandy/RadioShack and HP also produced portable computers of varying designs during this period, the first laptops using the flip form factor appeared in the early 1980s. The Dulmont Magnum was released in Australia in 1981–82, but was not marketed internationally until 1984–85, the US$8,150 GRiD Compass 1101, released in 1982, was used at NASA and by the military, among others. The Sharp PC-5000, Ampere and Gavilan SC released in 1983, the Gavilan SC was the first computer described as a laptop by its manufacturer, while the Ampere had a modern clamshell design. The Toshiba T1100 won acceptance not only among PC experts but the market as a way to have PC portability. From 1983 onward, several new techniques were developed and included in laptops, including the touchpad, the pointing stick
35.
Tablet computer
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Tablets often come equipped with sensors, including digital cameras, a microphone, and an accelerometer so images on screens are always displayed upright. The touchscreen display uses the recognition of finger or stylus gestures to replace the mouse, trackpad, tablets are typically larger than smartphones or personal digital assistants with screens 7 inches or larger, measured diagonally. However much of a tablets functionality resembles that of a modern smartphone, tablets can be classified according to the presence and physical appearance of keyboards. Slates and booklets do not have a keyboard, and usually accept text. Hybrids, convertibles, and 2-in-1s do have physical keyboards, yet they also make use of virtual keyboards. Some 2-in-1s have processors and operating systems like a full laptop, most tablets can use separate keyboards connected using Bluetooth. The format was conceptualized in the century and prototyped and developed in the last two decades of that century. In April 2010, Apple released the iPad, the first mass-market tablet to achieve widespread popularity, thereafter in the 2010s, tablets rapidly rose in ubiquity and became a large product category used for both personal and workplace applications. The tablet computer and its operating system began with the development of pen computing. Throughout the 20th century devices with these characteristics have been imagined and created whether as blueprints, prototypes, a device more powerful than todays tablets appeared briefly in Jerry Pournelle and Larry Nivens The Mote in Gods Eye. Adults could also use a Dynabook, but the audience was children. In 1992, Atari showed developers the Stylus, later renamed ST-Pad, the ST-Pad was based on the TOS/GEM Atari ST Platform and prototyped early handwriting recognition. Shiraz Shivjis company Momentus demonstrated in the time a failed x86 MS-DOS based Pen Computer with its own GUI. In 1994, the European Union initiated the NewsPad project, inspired by Clarke, Acorn Computers developed and delivered an ARM-based touch screen tablet computer for this program, branding it the NewsPad, the project ended in 1997. During the November 2000 COMDEX, Microsoft used the term Tablet PC to describe a prototype handheld device they were demonstrating, all three products were based on extended versions of the MS-DOS operating system. In 1992, IBM announced and shipped to developers the 2521 ThinkPad, also based on PenPoint was AT&Ts EO Personal Communicator from 1993, which ran on AT&Ts own hardware, including their own AT&T Hobbit CPU. Apple Computer launched the Apple Newton personal digital assistant in 1993 and it utilised Apples own new Newton OS, initially running on hardware manufactured by Motorola and incorporating an ARM CPU, that Apple had specifically co-developed with Acorn Computers. The operating system and platform design were later licensed to Sharp and Digital Ocean, in 1996, Palm, Inc. released the first of the Palm OS based PalmPilot touch and stylus based PDA, the touch based devices initially incorporating a Motorola Dragonball CPU
36.
Smartphone
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A smartphone is a mobile phone with an advanced mobile operating system that combines features of a personal computer operating system with other features useful for mobile or handheld use. Smartphones can access the Internet and can run a variety of third-party software components and they typically have a color display with a graphical user interface that covers more than 76% of the front surface. In 1999, the Japanese firm NTT DoCoMo released the first smartphones to achieve mass adoption within a country, smartphones became widespread in the late 2000s. Most of those produced from 2012 onward have high-speed mobile broadband 4G LTE, motion sensors, in the third quarter of 2012, one billion smartphones were in use worldwide. Global smartphone sales surpassed the sales figures for regular cell phones in early 2013, devices that combined telephony and computing were first conceptualized by Nikola Tesla in 1909 and Theodore Paraskevakos in 1971 and patented in 1974, and were offered for sale beginning in 1993. Paraskevakos was the first to introduce the concepts of intelligence, data processing and they were installed at Peoples Telephone Company in Leesburg, Alabama and were demonstrated to several telephone companies. The original and historic working models are still in the possession of Paraskevakos, the first mobile phone to incorporate PDA features was a prototype developed by Frank Canova in 1992 while at IBM and demonstrated that year at the COMDEX computer industry trade show. It included PDA features and other mobile applications such as maps, stock reports. A refined version was marketed to consumers in 1994 by BellSouth under the name Simon Personal Communicator, the Simon was the first commercially available device that could be properly referred to as a smartphone, although it was not called that in 1994. The term smart phone appeared in print as early as 1995, in the mid-late 1990s, many mobile phone users carried a separate dedicated PDA device, running early versions of operating systems such as Palm OS, BlackBerry OS or Windows CE/Pocket PC. These operating systems would later evolve into mobile operating systems, in March 1996, Hewlett-Packard released the OmniGo 700LX, a modified HP 200LX palmtop PC that supported a Nokia 2110 phone with ROM-based software to support it. It had a 640×200 resolution CGA compatible four-shade gray-scale LCD screen and could be used to place and receive calls and it was also 100% DOS5.0 compatible, allowing it to run thousands of existing software titles, including early versions of Windows. In August 1996, Nokia released the Nokia 9000 Communicator, a cellular phone based on the Nokia 2110 with an integrated PDA based on the PEN/GEOS3.0 operating system from Geoworks. The two components were attached by a hinge in what known as a clamshell design, with the display above. The PDA provided e-mail, calendar, address book, calculator and notebook applications, text-based Web browsing, when closed, the device could be used as a digital cellular phone. In June 1999 Qualcomm released the pdQ Smartphone, a CDMA digital PCS Smartphone with an integrated Palm PDA, subsequent landmark devices included, The Ericsson R380 by Ericsson Mobile Communications. The first device marketed as a smartphone, it combined the functions of a phone and PDA. The Kyocera 6035 introduced by Palm, Inc, combining a PDA with a mobile phone, it operated on the Verizon network, and supported limited Web browsing
37.
Smart TV
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A smart TV, sometimes referred to as connected TV or hybrid TV, is a television set with integrated Internet and interactive Web 2.0 features. Smart TV is a convergence between computers and flatscreen television sets and set-top boxes. Smart TV should not be confused with Internet TV, IPTV or with Web TV, Internet TV refers to receiving television content over the Internet instead of traditional systems. Internet Protocol television is one of the Internet television technology standards for use by television broadcasters, Web television is a term used for programs created by a wide variety of companies and individuals for broadcast on Internet TV. In smart TVs, the system is preloaded or is available through the set-top box. These devices allow viewers to search, find and play videos, movies, TV shows, photos and other content from the Web, on a cable TV channel, on a satellite TV channel, or on a local storage drive. A first patent was published in 1994 for an intelligent television system, linked with data processing systems, apart from being linked to data networks, one key point is its ability to automatically download necessary software routines, according to a users demand, and process their needs. The mass acceptance of digital television in late 2000s and early 2010s greatly improved smart TVs, major TV manufacturers have announced production of smart TVs only, for their middle-end to high-end TVs in 2015. Smart TVs are expected to become the dominant form of television by the late 2010s, at the beginning of 2016, Nielsen reported that 29 percent of those with incomes over $75,000 a year had a smart TV. Smart TVs run complete operating system or mobile operating system providing a platform for application developers. Smart TV enables access to movies, shows, video games, apps, some of those apps include Netflix, Spotify, YouTube, and Amazon. Smart TV devices also provide access to user-generated content and to services and Internet applications, such as YouTube. Smart TV devices facilitate the curation of traditional content by combining information from the Internet with content from TV Providers, services offer users a means to track and receive reminders about shows or sporting events, as well as the ability to change channels for immediate viewing. Smart TV develops new features to satisfy consumers and companies, such as new payment processes, LG and PaymentWall have collaborated to allow consumers to access purchased apps, movies, games, and more using a remote control, laptop, tablet, or smartphone. This is intended for an easier and more convenient way for checkout, Smart TV technology and software is still evolving, with both proprietary and open source software frameworks already available. These can run applications, interactive media, personalized communications. There are many Smart TV platforms used for individual purposes, Smart TV owners desire the most successful platform possible for their Smart TV. For this reason, platforms are ranked from best to worst, HbbTV, provided by the Hybrid Broadcast Broadband TV association, CE-HTML, part of Web4CE, OIPF, part of HbbTV, and Tru2way are framework platforms managed by technology businesses
38.
History of the World Wide Web
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The World Wide Web is a global information medium which users can read and write via computers connected to the Internet. The term is often used as a synonym for the Internet itself. The history of the Internet dates back further than that of the World Wide Web. Paul Otlets Mundaneum project has also named as an early 20th century precursor of the Web. Although the computer system in the story is centralized, the story anticipates a ubiquitous information environment similar to the Web. Shortly after Berners-Lees return to CERN, TCP/IP protocols were installed on some key non-Unix machines at the institution, as a result, CERNs infrastructure was ready for Berners-Lee to create the Web. Berners-Lee wrote a proposal in March 1989 for a large database with typed links. Although the proposal attracted little interest, Berners-Lee was encouraged by his boss, Mike Sendall and he considered several names, including Information Mesh, The Information Mine or Mine of Information, but settled on World Wide Web. Berners-Lee found a supporter in Robert Cailliau. The browser could access Usenet newsgroups and FTP files as well, however, it could run only on the NeXT, Nicola Pellow therefore created a simple text browser that could run on almost any computer called the Line Mode Browser. To encourage use within CERN, Bernd Pollermann put the CERN telephone directory on the web — previously users had to log onto the mainframe in order to look up phone numbers. While inventing and working on setting up the Web, Berners-Lee spent most of his hours in Building 31 at CERN. In January 1991 the first Web servers outside CERN itself were switched on, jones stored the plain-text page, with hyperlinks, on a floppy disk and on his NeXT computer. CERN put the oldest known web page back online in 2014, on August 6,1991, Berners-Lee posted a short summary of the World Wide Web project on the alt. hypertext newsgroup, inviting collaborators. This date is confused with the public availability of the first web servers. Paul Kunz from the Stanford Linear Accelerator Center visited CERN in September 1991, the www-talk mailing list was started in the same month. An early CERN-related contribution to the Web was the parody band Les Horribles Cernettes, by January 1993 there were fifty Web servers across the world, by October 1993 there were over five hundred. Two of the earliest webcomics started on the World Wide Web in 1993, Doctor Fun and NetBoy
39.
Tim Berners-Lee
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Sir Timothy John Berners-Lee OM KBE FRS FREng FRSA FBCS, also known as TimBL, is an English computer scientist, best known as the inventor of the World Wide Web. Berners-Lee is the director of the World Wide Web Consortium, which oversees the development of the Web. He is also the founder of the World Wide Web Foundation and is a researcher and holder of the founders chair at the MIT Computer Science. He is a director of the Web Science Research Initiative, in 2011, he was named as a member of the board of trustees of the Ford Foundation. In 2004, Berners-Lee was knighted by Queen Elizabeth II for his pioneering work, in April 2009, he was elected a foreign associate of the United States National Academy of Sciences. Named in Time magazines list of the 100 Most Important People of the 20th century and he tweeted This is for everyone, which instantly was spelled out in LCD lights attached to the chairs of the 80,000 people in the audience. Berners-Lee was born in London, England, United Kingdom, one of four born to Mary Lee Woods. His parents worked on the first commercially built computer, the Ferranti Mark 1, a keen trainspotter as a child, he learnt about electronics from tinkering with a model railway. He studied at The Queens College, Oxford, from 1973 to 1976, after graduation, Berners-Lee worked as an engineer at the telecommunications company Plessey in Poole, Dorset. In 1978, he joined D. G. Nash in Ferndown, Dorset, Berners-Lee worked as an independent contractor at CERN from June to December 1980. While in Geneva, he proposed a project based on the concept of hypertext, to demonstrate it, he built a prototype system named ENQUIRE. After leaving CERN in late 1980, he went to work at John Pooles Image Computer Systems, Ltd, in Bournemouth and he ran the companys technical side for three years. The project he worked on was a remote procedure call which gave him experience in computer networking. In 1984, he returned to CERN as a fellow and it then was accepted by his manager, Mike Sendall. He used similar ideas to those underlying the ENQUIRE system to create the World Wide Web, for which he designed and his software also functioned as an editor, and the first Web server, CERN HTTPd. The first web site was built at CERN, despite this being an international organisation hosted by Switzerland, the office that Berners-Lee used was just across the border in France. It was put online on 6 August 1991 for the first time, It provided an explanation of what the World Wide Web was and we can connect with each other instantly, all over the world. In 1994, Berners-Lee founded the W3C at the Massachusetts Institute of Technology and it comprised various companies that were willing to create standards and recommendations to improve the quality of the Web
40.
CERN
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The European Organization for Nuclear Research, known as CERN, is a European research organization that operates the largest particle physics laboratory in the world. Established in 1954, the organization is based in a northwest suburb of Geneva on the Franco–Swiss border, Israel is the only non-European country granted full membership. The main site at Meyrin hosts a large computing facility, which is used to store and analyse data from experiments. Researchers need remote access to facilities, so the lab has historically been a major wide area network hub. CERN is also the birthplace of the World Wide Web, the convention establishing CERN was ratified on 29 September 1954 by 12 countries in Western Europe. The acronym was retained for the new laboratory after the council was dissolved. CERNs first president was Sir Benjamin Lockspeiser, edoardo Amaldi was the general secretary of CERN at its early stages when operations were still provisional, while the first Director-General was Felix Bloch. The laboratory was originally devoted to the study of atomic nuclei, therefore, the laboratory operated by CERN is commonly referred to as the European laboratory for particle physics, which better describes the research being performed there. Several important achievements in physics have been made through experiments at CERN. The 1984 Nobel Prize for Physics was awarded to Carlo Rubbia, the 1992 Nobel Prize for Physics was awarded to CERN staff researcher Georges Charpak for his invention and development of particle detectors, in particular the multiwire proportional chamber. The World Wide Web began as a CERN project named ENQUIRE, initiated by Tim Berners-Lee in 1989, Berners-Lee and Cailliau were jointly honoured by the Association for Computing Machinery in 1995 for their contributions to the development of the World Wide Web. Based on the concept of hypertext, the project was intended to facilitate the sharing of information between researchers, the first website was activated in 1991. On 30 April 1993, CERN announced that the World Wide Web would be free to anyone, a copy of the original first webpage, created by Berners-Lee, is still published on the World Wide Web Consortiums website as a historical document. Prior to the Webs development, CERN had pioneered the introduction of Internet technology, a short history of this period can be found at CERN. ch. More recently, CERN has become a facility for the development of computing, hosting projects including the Enabling Grids for E-sciencE. It also hosts the CERN Internet Exchange Point, one of the two main internet exchange points in Switzerland. 48×10−5, a measurement with 6. 0-sigma significance. However, on 23 February, CERN stated in a release that the results were flawed due to an incorrectly connected GPS-synchronization cable. In March 2012, the ICARUS Collaboration reported that the measurement would be reproduced by both OPERA and ICARUS, further tests, after fixing the GPS connector, showed speed measurements consistent with the speed of light from four experiments at Gran Sasso, including OPERA
41.
File Transfer Protocol
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The File Transfer Protocol is a standard network protocol used for the transfer of computer files from a server to a client using the Client–server model on a computer network. FTP is built on a model architecture and uses separate control. FTP users may authenticate themselves with a clear-text sign-in protocol, normally in the form of a username and password, for secure transmission that protects the username and password, and encrypts the content, FTP is often secured with SSL/TLS. SSH File Transfer Protocol is sometimes used instead, but is technologically different. The original specification for the File Transfer Protocol was written by Abhay Bhushan, until 1980, FTP ran on NCP, the predecessor of TCP/IP. The protocol was replaced by a TCP/IP version, RFC765 and RFC959. FTP may run in active or passive mode, which determines how the connection is established. In both cases, the client creates a TCP control connection from a random, usually an unprivileged, in active mode, the client starts listening for incoming data connections from the server on port M. It sends the FTP command PORT M to inform the server on which port it is listening, the server then initiates a data channel to the client from its port 20, the FTP server data port. In situations where the client is behind a firewall and unable to accept incoming TCP connections, both modes were updated in September 1998 to support IPv6. Further changes were introduced to the mode at that time. The server responds over the connection with three-digit status codes in ASCII with an optional text message. For example,200 means that the last command was successful, the numbers represent the code for the response and the optional text represents a human-readable explanation or request. An ongoing transfer of data over the data connection can be aborted using an interrupt message sent over the control connection. While transferring data over the network, four data representations can be used, ASCII mode, Data is converted, if needed, from the sending hosts character representation to 8-bit ASCII before transmission, and to the receiving hosts character representation. As a consequence, this mode is inappropriate for files that contain other than plain text. Image mode, The sending machine sends each file byte by byte, EBCDIC mode, Used for plain text between hosts using the EBCDIC character set. Local mode, Allows two computers with identical setups to send data in a format without the need to convert it to ASCII
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Gopher protocol
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The Gopher protocol /ˈɡoʊfər/ is a TCP/IP application layer protocol designed for distributing, searching, and retrieving documents over the Internet. The Gopher ecosystem is often regarded as the predecessor of the World Wide Web. The protocol was invented by a led by Mark P. McCahill at the University of Minnesota. It offers some features not natively supported by the Web and imposes a much stronger hierarchy on information stored on it, more recent Gopher revisions and graphical clients added support for multimedia. Gopher was preferred by many network administrators for using fewer resources than Web services. Gophers hierarchical structure provided a platform for the first large-scale electronic library connections, Gopher has been described by some enthusiasts as faster and more efficient and so much more organised than todays Web services. The Gopher protocol is still in use by enthusiasts, and although it has been almost entirely supplanted by the Web, a small population of actively maintained servers remains. Gopher system was released in mid-1991 by Mark P. McCahill, Farhad Anklesaria, Paul Lindner, Daniel Torrey and its central goals were, as stated in RFC1436, A file-like hierarchical arrangement that would be familiar to users. A system that can be created quickly and inexpensively, extending the file system metaphor, such as searches. By 1992, the method of locating someones e-mail address was to find their organizations CCSO nameserver entry in Gopher. The name was coined by Anklesaria as a play on several meanings of the word gopher, the University of Minnesota mascot is the gopher, a gofer is an assistant who goes for things, and a gopher burrows through the ground to reach a desired location. The World Wide Web was in its infancy in 1991, by the late 1990s, Gopher had largely ceased expanding. Several factors contributed to Gophers stagnation, In February 1993, the University of Minnesota announced that it would charge licensing fees for the use of its implementation of the Gopher server. As a consequence of this, some users were concerned that a fee would also be charged for independent implementations. Users were scared away from Gopher technology, to the advantage of the Web, in September 2000, the University of Minnesota re-licensed its Gopher software under the GNU General Public License. Gopher client functionality was duplicated by early Web browsers, such as Mosaic. Gopher has a rigid structure compared to the free-form HTML of the Web. With Gopher, every document has a format and type
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Word processor
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A word processor is an electronic device or computer software application, that performs the task of composing, editing, formatting, and printing of documents. Later models introduced innovations such as spell-checking programs, and improved formatting options, as of 2009 there were only two U. S. companies, Classic and AlphaSmart, which still made them. Many older machines, however, remain in use, since 2009, Sentinel has offered a machine described as a word processor, but it is more accurately a highly specialised microcomputer used for accounting and publishing. Most are powerful systems consisting of one or more programs that can produce a combination of images, graphics and text, the latter handled with type-setting capability. In its simplest form, a processor is like an Expensive Typewriter or Typewriter machine, with the improvement of being able to proofread. Microsoft Word is the most widely used word processing software according to a tracking system built into the software. Microsoft estimates that half a billion people use the Microsoft Office suite. Many other word processing applications exist, including WordPerfect and open source applications OpenOffice. org Writer, LibreOffice Writer, AbiWord, KWord, web-based word processors, such as Office Online or Google Docs are a relatively new category. Word processors evolved dramatically once they became software programs rather than dedicated machines and they can usefully be distinguished from text editors, the category of software they evolved from. A text editor is a program that is used for typing, copying, pasting, text editors do not format lines or pages. Text editors are now used mainly by programmers, website designers, computer system administrators and they are also useful when fast startup times, small file sizes, editing speed, and simplicity of operation are valued, and when formatting is unimportant. Due to their use in managing complex software projects, text editors can sometimes provide better facilities for managing large writing projects than a word processor. Word processing added to the editor the ability to control type style and size, to manage lines, to format documents into pages. Functions now taken for granted were added incrementally, sometimes by purchase of independent providers of add-on programs, spell checking, grammar checking and mail merge were some of the most popular add-ons for early word processors. Word processors are capable of hyphenation, and the management. More advanced features found in recent word processors include, Collaborative editing, allowing users to work on the same document. Management, editing, and positioning of visual material, and sometimes sound files, automatically managed cross-references to pages or notes. Version control of a document, permitting reconstruction of its evolution, styles, which automate consistent formatting of text body, titles, subtitles, highlighted text, and so on
