Civil engineering is a professional engineering discipline that deals with the design and maintenance of the physical and built environment, including public works such as roads, canals, airports, sewerage systems, structural components of buildings, railways. Civil engineering is traditionally broken into a number of sub-disciplines, it is considered the second-oldest engineering discipline after military engineering, it is defined to distinguish non-military engineering from military engineering. Civil engineering takes place in the public sector from municipal through to national governments, in the private sector from individual homeowners through to international companies. Civil engineering is the application of physical and scientific principles for solving the problems of society, its history is intricately linked to advances in the understanding of physics and mathematics throughout history; because civil engineering is a wide-ranging profession, including several specialized sub-disciplines, its history is linked to knowledge of structures, materials science, geology, hydrology, environment and other fields.
Throughout ancient and medieval history most architectural design and construction was carried out by artisans, such as stonemasons and carpenters, rising to the role of master builder. Knowledge was retained in guilds and supplanted by advances. Structures and infrastructure that existed were repetitive, increases in scale were incremental. One of the earliest examples of a scientific approach to physical and mathematical problems applicable to civil engineering is the work of Archimedes in the 3rd century BC, including Archimedes Principle, which underpins our understanding of buoyancy, practical solutions such as Archimedes' screw. Brahmagupta, an Indian mathematician, used arithmetic in the 7th century AD, based on Hindu-Arabic numerals, for excavation computations. Engineering has been an aspect of life since the beginnings of human existence; the earliest practice of civil engineering may have commenced between 4000 and 2000 BC in ancient Egypt, the Indus Valley Civilization, Mesopotamia when humans started to abandon a nomadic existence, creating a need for the construction of shelter.
During this time, transportation became important leading to the development of the wheel and sailing. Until modern times there was no clear distinction between civil engineering and architecture, the term engineer and architect were geographical variations referring to the same occupation, used interchangeably; the construction of pyramids in Egypt were some of the first instances of large structure constructions. Other ancient historic civil engineering constructions include the Qanat water management system the Parthenon by Iktinos in Ancient Greece, the Appian Way by Roman engineers, the Great Wall of China by General Meng T'ien under orders from Ch'in Emperor Shih Huang Ti and the stupas constructed in ancient Sri Lanka like the Jetavanaramaya and the extensive irrigation works in Anuradhapura; the Romans developed civil structures throughout their empire, including aqueducts, harbors, bridges and roads. In the 18th century, the term civil engineering was coined to incorporate all things civilian as opposed to military engineering.
The first self-proclaimed civil engineer was John Smeaton. In 1771 Smeaton and some of his colleagues formed the Smeatonian Society of Civil Engineers, a group of leaders of the profession who met informally over dinner. Though there was evidence of some technical meetings, it was little more than a social society. In 1818 the Institution of Civil Engineers was founded in London, in 1820 the eminent engineer Thomas Telford became its first president; the institution received a Royal Charter in 1828, formally recognising civil engineering as a profession. Its charter defined civil engineering as:the art of directing the great sources of power in nature for the use and convenience of man, as the means of production and of traffic in states, both for external and internal trade, as applied in the construction of roads, aqueducts, river navigation and docks for internal intercourse and exchange, in the construction of ports, moles and lighthouses, in the art of navigation by artificial power for the purposes of commerce, in the construction and application of machinery, in the drainage of cities and towns.
The first private college to teach civil engineering in the United States was Norwich University, founded in 1819 by Captain Alden Partridge. The first degree in civil engineering in the United States was awarded by Rensselaer Polytechnic Institute in 1835; the first such degree to be awarded to a woman was granted by Cornell University to Nora Stanton Blatch in 1905. In the UK during the early 19th century, the division between civil engineering and military engineering, coupled with the demands of the Industrial Revolution, spawned new engineering education initiatives: the Class of Civil Engineering and Mining was founded at King's College London in 1838 as a response to the growth of the railway system and the need for more qualified engineers, the private College for Civil Engineers in Putney was established in 1839, the UK's first Chair of Engineering was established at the University of Glasgow in 1840. Civil engineers possess an academic degree in civil engineering; the length of study is three to five years, the completed degree is designated as a bachelor
Mechanical engineering is the discipline that applies engineering, engineering mathematics, materials science principles to design, analyze and maintain mechanical systems. It is one of the broadest of the engineering disciplines; the mechanical engineering field requires an understanding of core areas including mechanics, thermodynamics, materials science, structural analysis, electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design, computer-aided manufacturing, product life cycle management to design and analyze manufacturing plants, industrial equipment and machinery and cooling systems, transport systems, watercraft, medical devices and others, it is the branch of engineering that involves the design and operation of machinery. Mechanical engineering emerged as a field during the Industrial Revolution in Europe in the 18th century. In the 19th century, developments in physics led to the development of mechanical engineering science.
The field has continually evolved to incorporate advancements. It overlaps with aerospace engineering, metallurgical engineering, civil engineering, electrical engineering, manufacturing engineering, chemical engineering, industrial engineering, other engineering disciplines to varying amounts. Mechanical engineers may work in the field of biomedical engineering with biomechanics, transport phenomena, bionanotechnology, modelling of biological systems; the application of mechanical engineering can be seen in the archives of various ancient and medieval societies. In ancient Greece, the works of Archimedes influenced mechanics in the Western tradition and Heron of Alexandria created the first steam engine. In China, Zhang Heng improved a water clock and invented a seismometer, Ma Jun invented a chariot with differential gears; the medieval Chinese horologist and engineer Su Song incorporated an escapement mechanism into his astronomical clock tower two centuries before escapement devices were found in medieval European clocks.
He invented the world's first known endless power-transmitting chain drive. During the Islamic Golden Age, Muslim inventors made remarkable contributions in the field of mechanical technology. Al-Jazari, one of them, wrote his famous Book of Knowledge of Ingenious Mechanical Devices in 1206 and presented many mechanical designs. Al-Jazari is the first known person to create devices such as the crankshaft and camshaft, which now form the basics of many mechanisms. During the 17th century, important breakthroughs in the foundations of mechanical engineering occurred in England. Sir Isaac Newton formulated Newton's Laws of Motion and developed Calculus, the mathematical basis of physics. Newton was reluctant to publish his works for years, but he was persuaded to do so by his colleagues, such as Sir Edmond Halley, much to the benefit of all mankind. Gottfried Wilhelm Leibniz is credited with creating Calculus during this time period. During the early 19th century industrial revolution, machine tools were developed in England and Scotland.
This allowed mechanical engineering to develop as a separate field within engineering. They brought with them manufacturing machines and the engines to power them; the first British professional society of mechanical engineers was formed in 1847 Institution of Mechanical Engineers, thirty years after the civil engineers formed the first such professional society Institution of Civil Engineers. On the European continent, Johann von Zimmermann founded the first factory for grinding machines in Chemnitz, Germany in 1848. In the United States, the American Society of Mechanical Engineers was formed in 1880, becoming the third such professional engineering society, after the American Society of Civil Engineers and the American Institute of Mining Engineers; the first schools in the United States to offer an engineering education were the United States Military Academy in 1817, an institution now known as Norwich University in 1819, Rensselaer Polytechnic Institute in 1825. Education in mechanical engineering has been based on a strong foundation in mathematics and science.
Degrees in mechanical engineering are offered at various universities worldwide. Mechanical engineering programs take four to five years of study and result in a Bachelor of Engineering, Bachelor of Science, Bachelor of Science Engineering, Bachelor of Technology, Bachelor of Mechanical Engineering, or Bachelor of Applied Science degree, in or with emphasis in mechanical engineering. In Spain and most of South America, where neither B. Sc. nor B. Tech. Programs have been adopted, the formal name for the degree is "Mechanical Engineer", the course work is based on five or six years of training. In Italy the course work is based on five years of education, training, but in order to qualify as an Engineer one has to pass a state exam at the end of the course. In Greece, the coursework is based on a five-year curriculum and the requirement of a'Diploma' Thesis, which upon completion a'Diploma' is awarded rather than a B. Sc. In the United States, most undergraduate mechanical engineering programs are accredited by the Accreditation Board for Engineering and Technology to ensure similar course requirements and standards a
Tennis is a racket sport that can be played individually against a single opponent or between two teams of two players each. Each player uses a tennis racket, strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court; the object of the game is to maneuver the ball in such a way that the opponent is not able to play a valid return. The player, unable to return the ball will not gain a point, while the opposite player will. Tennis is played at all levels of society and at all ages; the sport can be played by anyone. The modern game of tennis originated in Birmingham, England, in the late 19th century as lawn tennis, it had close connections both to various field games such as croquet and bowls as well as to the older racket sport today called real tennis. During most of the 19th century, in fact, the term tennis referred to real tennis, not lawn tennis; the rules of modern tennis have changed little since the 1890s. Two exceptions are that from 1908 to 1961 the server had to keep one foot on the ground at all times, the adoption of the tiebreak in the 1970s.
A recent addition to professional tennis has been the adoption of electronic review technology coupled with a point-challenge system, which allows a player to contest the line call of a point, a system known as Hawk-Eye. Tennis is played by millions of recreational players and is a popular worldwide spectator sport; the four Grand Slam tournaments are popular: the Australian Open played on hard courts, the French Open played on red clay courts, Wimbledon played on grass courts, the US Open played on hard courts. Historians believe that the game's ancient origin lay in 12th century northern France, where a ball was struck with the palm of the hand. Louis X of France was a keen player of jeu de paume, which evolved into real tennis, became notable as the first person to construct indoor tennis courts in the modern style. Louis was unhappy with playing tennis outdoors and accordingly had indoor, enclosed courts made in Paris "around the end of the 13th century". In due course this design spread across royal palaces all over Europe.
In June 1316 at Vincennes, Val-de-Marne and following a exhausting game, Louis drank a large quantity of cooled wine and subsequently died of either pneumonia or pleurisy, although there was suspicion of poisoning. Because of the contemporary accounts of his death, Louis X is history's first tennis player known by name. Another of the early enthusiasts of the game was King Charles V of France, who had a court set up at the Louvre Palace, it wasn't until the 16th century that rackets came into use, the game began to be called "tennis", from the French term tenez, which can be translated as "hold!", "receive!" or "take!", an interjection used as a call from the server to his opponent. It was popular in England and France, although the game was only played indoors where the ball could be hit off the wall. Henry VIII of England was a big fan of this game, now known as real tennis. During the 18th and early 19th centuries, as real tennis declined, new racket sports emerged in England. Further, the patenting of the first lawn mower in 1830, in Britain, is believed to have been the catalyst, for the preparation of modern-style grass courts, sporting ovals, playing fields, greens, etc.
This in turn led to the codification of modern rules for many sports, including lawn tennis, most football codes, lawn bowls and others. Between 1859 and 1865 Harry Gem, a solicitor and his friend Augurio Perera developed a game that combined elements of racquets and the Basque ball game pelota, which they played on Perera's croquet lawn in Birmingham, United Kingdom. In 1872, along with two local doctors, they founded the world's first tennis club on Avenue Road, Leamington Spa; this is. After Leamington, the second club to take up the game of lawn tennis appears to have been the Edgbaston Archery and Croquet Society in Birmingham. In Tennis: A Cultural History, Heiner Gillmeister reveals that on December 8, 1874, British army officer Walter Clopton Wingfield wrote to Harry Gem, commenting that he had been experimenting with his version of lawn tennis “for a year and a half”. In December 1873, Wingfield designed and patented a game which he called sphairistikè, was soon known as "sticky" – for the amusement of guests at a garden party on his friend's estate of Nantclwyd Hall, in Llanelidan, Wales.
According to R. D. C. Evans, turfgrass agronomist, "Sports historians all agree that deserves much of the credit for the development of modern tennis." According to Honor Godfrey, museum curator at Wimbledon, Wingfield "popularized this game enormously. He produced a boxed set which included a net, rackets, balls for playing the game – and most you had his rules, he was terrific at marketing and he sent his game all over the world. He had good connections with the clergy, the law profession, the aristocracy and he sent thousands of sets out in the first year or so, in 1874." The world's oldest annual tennis tournament took place at Leamington Lawn Tennis Club in Birmingham in 1874. This was three years before the All England Lawn Tennis and Croquet Club would hold its first championships at Wimbledon, in 1877; the first Championships culminated a significant debate on. In the U. S. in 1874 Mary Ewing Outerbridge, a young socialite, returned from Bermuda with a sphairistikè set. She became fascin
Karnataka is a state in the south western region of India. It was formed on 1 November 1956, with the passage of the States Reorganisation Act. Known as the State of Mysore, it was renamed Karnataka in 1973; the state corresponds to the Carnatic region. The capital and largest city is Bangalore. Karnataka is bordered by the Arabian Sea to the west, Goa to the northwest, Maharashtra to the north, Telangana to the northeast, Andhra Pradesh to the east, Tamil Nadu to the southeast, Kerala to the south; the state covers an area of 191,976 square kilometres, or 5.83 percent of the total geographical area of India. It is the sixth largest Indian state by area. With 61,130,704 inhabitants at the 2011 census, Karnataka is the eighth largest state by population, comprising 30 districts. Kannada, one of the classical languages of India, is the most spoken and official language of the state alongside Konkani, Tulu, Telugu, Malayalam and Beary. Karnataka contains some of the only villages in India where Sanskrit is spoken.
The two main river systems of the state are the Krishna and its tributaries, the Bhima, Vedavathi and Tungabhadra in North Karnataka Sharavathi in Shivamogga and the Kaveri and its tributaries, the Hemavati, Arkavati, Lakshmana Thirtha and Kabini, in the south. Most of these rivers flow out of Karnataka eastward. Though several etymologies have been suggested for the name Karnataka, the accepted one is that Karnataka is derived from the Kannada words karu and nādu, meaning "elevated land". Karu nadu may be read as karu, meaning "black" and nadu, meaning "region", as a reference to the black cotton soil found in the Bayalu Seeme region of the state; the British used the word Carnatic, sometimes Karnatak, to describe both sides of peninsular India, south of the Krishna. With an antiquity that dates to the paleolithic, Karnataka has been home to some of the most powerful empires of ancient and medieval India; the philosophers and musical bards patronised by these empires launched socio-religious and literary movements which have endured to the present day.
Karnataka has contributed to both forms of Indian classical music, the Carnatic and Hindustani traditions. The economy of Karnataka is the third-largest state economy in India with ₹15.88 lakh crore in gross domestic product and a per capita GDP of ₹174,000. Karnataka's pre-history goes back to a paleolithic hand-axe culture evidenced by discoveries of, among other things, hand axes and cleavers in the region. Evidence of neolithic and megalithic cultures have been found in the state. Gold discovered in Harappa was found to be imported from mines in Karnataka, prompting scholars to hypothesise about contacts between ancient Karnataka and the Indus Valley Civilisation ca. 3300 BCE. Prior to the third century BCE, most of Karnataka formed part of the Nanda Empire before coming under the Mauryan empire of Emperor Ashoka. Four centuries of Satavahana rule followed; the decline of Satavahana power led to the rise of the earliest native kingdoms, the Kadambas and the Western Gangas, marking the region's emergence as an independent political entity.
The Kadamba Dynasty, founded by Mayurasharma, had its capital at Banavasi. These were the first kingdoms to use Kannada in administration, as evidenced by the Halmidi inscription and a fifth-century copper coin discovered at Banavasi; these dynasties were followed by imperial Kannada empires such as the Badami Chalukyas, the Rashtrakuta Empire of Manyakheta and the Western Chalukya Empire, which ruled over large parts of the Deccan and had their capitals in what is now Karnataka. The Western Chalukyas patronised a unique style of architecture and Kannada literature which became a precursor to the Hoysala art of the 12th century. Parts of modern-day Southern Karnataka were occupied by the Chola Empire at the turn of the 11th century; the Cholas and the Hoysalas fought over the region in the early 12th century before it came under Hoysala rule. At the turn of the first millennium, the Hoysalas gained power in the region. Literature flourished during this time, which led to the emergence of distinctive Kannada literary metres, the construction of temples and sculptures adhering to the Vesara style of architecture.
The expansion of the Hoysala Empire brought minor parts of modern Andhra Pradesh and Tamil Nadu under its rule. In the early 14th century and Bukka Raya established the Vijayanagara empire with its capital, Hosapattana, on the banks of the Tungabhadra River in the modern Bellary district; the empire rose as a bulwark against Muslim advances into South India, which it controlled for over two centuries. In 1565, Karnataka and the rest of South India experienced a major geopolitical shift when the Vijayanagara empire fell to a confederation of Islamic sultanates in the Battle of Talikota; the Bijapur Sultanate, which had risen after the demise of the Bahmani Sultanate of Bidar, soon took control of the Deccan. The Bahmani and Bijapur rulers encouraged Urdu and Persian literature and Indo-Saracenic architecture, the Gol Gumbaz being one of the high points of this style. During the sixteenth century, Konkani Hindus migrated to Karnataka from Salcette, while during the seventeenth and eighteenth century, Goan Catholics migrated to North Canara and South Canara from Bardes, Goa, as a result of food shortages and heavy taxation imposed by the Portuguese.
In the period that followed
Telecommunication is the transmission of signs, messages, writings and sounds or information of any nature by wire, optical or other electromagnetic systems. Telecommunication occurs when the exchange of information between communication participants includes the use of technology, it is transmitted either electrically over physical media, such as cables, or via electromagnetic radiation. Such transmission paths are divided into communication channels which afford the advantages of multiplexing. Since the Latin term communicatio is considered the social process of information exchange, the term telecommunications is used in its plural form because it involves many different technologies. Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, optical heliographs. Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, loud whistles. 20th- and 21st-century technologies for long-distance communication involve electrical and electromagnetic technologies, such as telegraph and teleprinter, radio, microwave transmission, fiber optics, communications satellites.
A revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications by Guglielmo Marconi, who won the Nobel Prize in Physics in 1909, other notable pioneering inventors and developers in the field of electrical and electronic telecommunications. These included Charles Wheatstone and Samuel Morse, Alexander Graham Bell, Edwin Armstrong and Lee de Forest, as well as Vladimir K. Zworykin, John Logie Baird and Philo Farnsworth; the word telecommunication is a compound of the Greek prefix tele, meaning distant, far off, or afar, the Latin communicare, meaning to share. Its modern use is adapted from the French, because its written use was recorded in 1904 by the French engineer and novelist Édouard Estaunié. Communication was first used as an English word in the late 14th century, it comes from Old French comunicacion, from Latin communicationem, noun of action from past participle stem of communicare "to share, divide out.
Homing pigeons have been used throughout history by different cultures. Pigeon post had Persian roots, was used by the Romans to aid their military. Frontinus said; the Greeks conveyed the names of the victors at the Olympic Games to various cities using homing pigeons. In the early 19th century, the Dutch government used the system in Sumatra, and in 1849, Paul Julius Reuter started a pigeon service to fly stock prices between Aachen and Brussels, a service that operated for a year until the gap in the telegraph link was closed. In the Middle Ages, chains of beacons were used on hilltops as a means of relaying a signal. Beacon chains suffered the drawback that they could only pass a single bit of information, so the meaning of the message such as "the enemy has been sighted" had to be agreed upon in advance. One notable instance of their use was during the Spanish Armada, when a beacon chain relayed a signal from Plymouth to London. In 1792, Claude Chappe, a French engineer, built the first fixed visual telegraphy system between Lille and Paris.
However semaphore suffered from the need for skilled operators and expensive towers at intervals of ten to thirty kilometres. As a result of competition from the electrical telegraph, the last commercial line was abandoned in 1880. On 25 July 1837 the first commercial electrical telegraph was demonstrated by English inventor Sir William Fothergill Cooke, English scientist Sir Charles Wheatstone. Both inventors viewed their device as "an improvement to the electromagnetic telegraph" not as a new device. Samuel Morse independently developed a version of the electrical telegraph that he unsuccessfully demonstrated on 2 September 1837, his code was an important advance over Wheatstone's signaling method. The first transatlantic telegraph cable was completed on 27 July 1866, allowing transatlantic telecommunication for the first time; the conventional telephone was invented independently by Alexander Bell and Elisha Gray in 1876. Antonio Meucci invented the first device that allowed the electrical transmission of voice over a line in 1849.
However Meucci's device was of little practical value because it relied upon the electrophonic effect and thus required users to place the receiver in their mouth to "hear" what was being said. The first commercial telephone services were set-up in 1878 and 1879 on both sides of the Atlantic in the cities of New Haven and London. Starting in 1894, Italian inventor Guglielmo Marconi began developing a wireless communication using the newly discovered phenomenon of radio waves, showing by 1901 that they could be transmitted across the Atlantic Ocean; this was the start of wireless telegraphy by radio. Voice and music had little early success. World War I accelerated the development of radio for military communications. After the war, commercial radio AM broadcasting began in the 1920s and became an important mass medium for entertainment and news. World War II again accelerated development of radio for the wartime purposes of aircraft and land communication, radio navigation and radar. Development of stereo FM broadcasting of radio
Computer science is the study of processes that interact with data and that can be represented as data in the form of programs. It enables the use of algorithms to manipulate and communicate digital information. A computer scientist studies the theory of computation and the practice of designing software systems, its fields can be divided into practical disciplines. Computational complexity theory is abstract, while computer graphics emphasizes real-world applications. Programming language theory considers approaches to the description of computational processes, while computer programming itself involves the use of programming languages and complex systems. Human–computer interaction considers the challenges in making computers useful and accessible; the earliest foundations of what would become computer science predate the invention of the modern digital computer. Machines for calculating fixed numerical tasks such as the abacus have existed since antiquity, aiding in computations such as multiplication and division.
Algorithms for performing computations have existed since antiquity before the development of sophisticated computing equipment. Wilhelm Schickard designed and constructed the first working mechanical calculator in 1623. In 1673, Gottfried Leibniz demonstrated a digital mechanical calculator, called the Stepped Reckoner, he may be considered the first computer scientist and information theorist, among other reasons, documenting the binary number system. In 1820, Thomas de Colmar launched the mechanical calculator industry when he released his simplified arithmometer, the first calculating machine strong enough and reliable enough to be used daily in an office environment. Charles Babbage started the design of the first automatic mechanical calculator, his Difference Engine, in 1822, which gave him the idea of the first programmable mechanical calculator, his Analytical Engine, he started developing this machine in 1834, "in less than two years, he had sketched out many of the salient features of the modern computer".
"A crucial step was the adoption of a punched card system derived from the Jacquard loom" making it infinitely programmable. In 1843, during the translation of a French article on the Analytical Engine, Ada Lovelace wrote, in one of the many notes she included, an algorithm to compute the Bernoulli numbers, considered to be the first computer program. Around 1885, Herman Hollerith invented the tabulator, which used punched cards to process statistical information. In 1937, one hundred years after Babbage's impossible dream, Howard Aiken convinced IBM, making all kinds of punched card equipment and was in the calculator business to develop his giant programmable calculator, the ASCC/Harvard Mark I, based on Babbage's Analytical Engine, which itself used cards and a central computing unit; when the machine was finished, some hailed it as "Babbage's dream come true". During the 1940s, as new and more powerful computing machines were developed, the term computer came to refer to the machines rather than their human predecessors.
As it became clear that computers could be used for more than just mathematical calculations, the field of computer science broadened to study computation in general. In 1945, IBM founded the Watson Scientific Computing Laboratory at Columbia University in New York City; the renovated fraternity house on Manhattan's West Side was IBM's first laboratory devoted to pure science. The lab is the forerunner of IBM's Research Division, which today operates research facilities around the world; the close relationship between IBM and the university was instrumental in the emergence of a new scientific discipline, with Columbia offering one of the first academic-credit courses in computer science in 1946. Computer science began to be established as a distinct academic discipline in the 1950s and early 1960s; the world's first computer science degree program, the Cambridge Diploma in Computer Science, began at the University of Cambridge Computer Laboratory in 1953. The first computer science degree program in the United States was formed at Purdue University in 1962.
Since practical computers became available, many applications of computing have become distinct areas of study in their own rights. Although many believed it was impossible that computers themselves could be a scientific field of study, in the late fifties it became accepted among the greater academic population, it is the now well-known IBM brand that formed part of the computer science revolution during this time. IBM released the IBM 704 and the IBM 709 computers, which were used during the exploration period of such devices. "Still, working with the IBM was frustrating if you had misplaced as much as one letter in one instruction, the program would crash, you would have to start the whole process over again". During the late 1950s, the computer science discipline was much in its developmental stages, such issues were commonplace. Time has seen significant improvements in the effectiveness of computing technology. Modern society has seen a significant shift in the users of computer technology, from usage only by experts and professionals, to a near-ubiquitous user base.
Computers were quite costly, some degree of humanitarian aid was needed for efficient use—in part from professional computer operators. As computer adoption became more widespread and affordable, less human assistance was needed for common usage. Despite its short history as a formal academic discipline, computer science has made a number of fundamental contributions to science and society—in fact, along with electronics, it is