1.
MS-DOS
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MS-DOS is a discontinued operating system for x86-based personal computers mostly developed by Microsoft. MS-DOS resulted from a request in 1981 by IBM for a system to use in its IBM PC range of personal computers. Microsoft quickly bought the rights to 86-DOS from Seattle Computer Products, IBM licensed and released it in August 1981 as PC DOS1.0 for use in their PCs. During its life, several competing products were released for the x86 platform and it was also the underlying basic operating system on which early versions of Windows ran as a GUI. It is a operating system, and consumes negligible installation space. MS-DOS was a form of 86-DOS – owned by Seattle Computer Products. This first version was shipped in August 1980, Microsoft, which needed an operating system for the IBM Personal Computer hired Tim Paterson in May 1981 and bought 86-DOS1.10 for $75,000 in July of the same year. Microsoft kept the number, but renamed it MS-DOS. They also licensed MS-DOS1. 10/1.14 to IBM, within a year Microsoft licensed MS-DOS to over 70 other companies. It was designed to be an OS that could run on any 8086-family computer, thus, there were many different versions of MS-DOS for different hardware, and there is a major distinction between an IBM-compatible machine and an MS-DOS machine. This design would have worked well for compatibility, if application programs had only used MS-DOS services to perform device I/O, Microsoft omitted multi-user support from MS-DOS because Microsofts Unix-based operating system, Xenix, was fully multi-user. After the breakup of the Bell System, however, AT&T Computer Systems started selling UNIX System V, believing that it could not compete with AT&T in the Unix market, Microsoft abandoned Xenix, and in 1987 transferred ownership of Xenix to the Santa Cruz Operation. On 25 March 2014, Microsoft made the code to SCP MS-DOS1.25, as an April Fools joke in 2015, Microsoft Mobile launched a Windows Phone application called MS-DOS Mobile which was presented as a new mobile operating system and worked similar to MS-DOS. Version 3.1 – Support for Microsoft Networks Version 3.2 – First version to support 3.5 inch,720 kB floppy drives and diskettes. Version 3.21 Version 3.22 – Version 3.25 Version 3.3 – First version to support 3.5 inch,1.44 MB floppy drives and diskettes, Version 3. 3a Version 3.31 – supports FAT16B and larger drives. MS-DOS4.0 and MS-DOS4.1 – A separate branch of development with additional multitasking features and it is unrelated to any later versions, including versions 4.00 and 4.01 listed below MS-DOS4. x – includes a graphical/mouse interface. It had many bugs and compatibility issues. Version 4.00 – First version to support a hard disk partition that is greater than 32 MiB. Version 4.01 – Microsoft rewritten Version 4.00 released under MS-DOS label, First version to introduce volume serial number when formatting hard disks and floppy disks
2.
Sierra Entertainment
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Sierra Entertainment is an American publisher founded in 1979 as On-Line Systems by Ken and Roberta Williams. Based in Oakhurst, California and later in Fresno, California, the division is now owned by Activision, Sierra is known for its multiple lines of seminal graphic adventure games started in the 1980s, many of which proved influential in the history of video games. The Sierra label was absorbed by its parent company in 2008, some franchises that were published by Sierra were later published by Activision. Sierra was revived in 2014 by Activision Blizzard and it now focuses on re-releasing their old games, reviving their franchises and collaborating with independent developers for smaller projects. Sierra Entertainment was founded in 1979 as On-Line Systems in Simi Valley, California, by Ken, Ken Williams, a programmer for IBM, bought an Apple II microcomputer which he planned to use to develop a Fortran compiler for the Apple II. At the time, his wife Roberta Williams was playing text adventure games on the Apple II, dissatisfied with the text-only format, she realized that the graphics display capability of the Apple II could enhance the adventure gaming experience. After initial success, On-Line Systems was renamed Sierra On-Line in 1982, by early 1984 InfoWorld estimated that Sierra was the worlds 12th-largest microcomputer-software company, with $12.5 million in 1983 sales. In 1980, On-Line Systems released their first game in the Hi-Res Adventure series, Roberta wrote the script for the adventure game in three weeks, then presented it to Ken. At this point, Roberta convinced Ken to help her develop the game in the evenings after work and she worked on the text and the graphics, and told Ken how to put it all together to make it the game she wanted. They worked on it for three months and, on May 5,1980, Mystery House was ready for shipment. Mystery House was an instant hit and it was the first computer adventure game to have graphics, although they were crude, monochrome, static line drawings. It sold about 15,000 copies and earned $167,000, the Hi-Res Adventure series continued with Mission Asteroid, which was released as Hi-Res Adventure #0, despite being the second release. The next release, Wizard and the Princess, also known as Adventure in Serenia, is considered a prelude to the later Kings Quest series in both story and concept. Through 1981 and 1982, more games were released in the series including Cranston Manor, Ulysses and the Golden Fleece, Time Zone, a simplified version of The Dark Crystal, intended for a younger audience, was written by Al Lowe and released as Gelfling Adventure. Many of Sierras most well known series began in the 1980s, in 1983, Sierra On-Line was contacted by IBM to create a game for its new PCjr. IBM would fund the development of the game, pay royalties for it. Ken and Roberta accepted and started on the project, Roberta created a story featuring classic fairy-tale elements. For the game, a development system called Adventure Game Interpreter was developed
3.
Video game programmer
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A game programmer is a software engineer, programmer, or computer scientist who primarily develops codebases for video games or related software, such as game development tools. Game programming has many specialized disciplines, all of which fall under the term of game programmer. A game programmer should not be confused with a game designer, in the early days of video games, a game programmer also took on the job of a designer and artist. This was generally because the abilities of computers were so limited that having specialized personnel for each function was unnecessary. Technology has advanced to such a degree that contemporary games usually boast 3D graphics. Nowadays, the term programmer art has come to imply the kind of bright colors. The desire for adding depth and assets to games necessitated a division of labor. Initially, art production was relegated to full-time artists, next game programming became a separate discipline from game design. Now, only games, such as the puzzle game Bejeweled, are simple enough to require just one full-time programmer. Despite this division, however, most game developers have some say in the design of contemporary games. Each aspect of the game can consume all of one time and, in many cases. Some programmers may specialize in one area of programming. The number of programmers needed for each feature depends somewhat on programmers skills, Game engine programmers create the base engine of the game, including the simulated physics and graphics disciplines. Increasingly, video games use existing game engines, either commercial and they are often customized for a particular game, and these programmers handle these modifications. A games physics programmer is dedicated to developing the physics a game will employ, typically, a game will only simulate a few aspects of real-world physics. For example, a game may need simulated gravity. Since processing cycles are always at a premium, physics programmers may employ shortcuts that are computationally inexpensive, in other cases, unrealistic physics are employed to allow easier gameplay or for dramatic effect. Sometimes, a subset of situations is specified and the physical outcome of such situations are stored in a record of some sort and are never computed at runtime at all
4.
Video game music
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Video game music is the soundtrack that accompanies video games. Early video game music was limited to simple melodies of early sound synthesizer technology. With advances in technology, video game music has now grown to include the same breadth and complexity associated with television and film scores, while simple synthesizer pieces are still common, game music now includes full orchestral pieces and popular music. Music in video games can be heard over a title screen, options menu. Today’s soundtracks can also change depending on a player’s actions or situation, Video game music can be one of two options, original or licensed. In order to create or collect this music, teams of composers, music directors, today, original composition has included the work of film composers Harry Gregson-Williams, Trent Reznor, Hans Zimmer, Josh Mancell, Steve Jablonsky, and Michael Giacchino. The popularity of game music has expanded education and job opportunities, generated awards. At the time video games had emerged as a form of entertainment in the late 1970s, music was stored on physical medium in analog waveforms such as compact cassettes. Such components were expensive and prone to breakage under heavy use making them less ideal for use in an arcade cabinet, though in rare cases. Sound effects for the games were also generated in this fashion, an early example of such an approach to video game music was the opening chiptune in Tomohiro Nishikados Gun Fight. The first game to use a background soundtrack was Tomohiro Nishikados Space Invaders. It had four descending chromatic bass notes repeating in a loop, though it was dynamic and interacted with the player, the first video game to feature continuous, melodic background music was Rally-X, released by Namco in 1980, featuring a simple tune that repeats continuously during gameplay. The decision to any music into a video game meant that at some point it would have to be transcribed into computer code by a programmer, whether or not the programmer had musical experience. Some music was original, some was public domain music such as folk songs, Sound capabilities were limited, the popular Atari 2600 home system, for example, was capable of generating only two tones, or notes, at a time. As advances were made in technology and costs fell, a definitively new generation of arcade machines. This was further improved upon by Namcos 1982 arcade game Dig Dug, Dig Dug was composed by Yuriko Keino, who also composed the music for other Namco games such as Xevious and Phozon. Home console systems also had an upgrade in sound ability beginning with the ColecoVision in 1982 capable of four channels. However, more notable was the Japanese release of the Famicom in 1983 which was released in the US as the Nintendo Entertainment System in 1985
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