Who wrote the original disk operating system

After Bill Gates found out that IBM was looking for an alternative operating system to the one it had originally planned, he bought the rights to QDOS (Quick and Dirty Operating System) from a small software company. IBM acquired the license from Microsoft and integrated it into the IBM PC as PC-DOS 1.0. PC-DOS took inspiration from CP/M (the operating system IBM had originally planned) and leading Microsoft to completely reprogram it. PC-DOS 2.0 then came to market as the first reasonably functioning operating system. Since IBM did not have an exclusive license for the operating system, Microsoft could also sell it to other companies. Under the name MS-DOS, it became one of the most popular operating systems of its time. In 1982, over 50 companies had licensing agreements for Microsoft’s disk operating system. As time went on, DOS users asked more and more of their graphical user interface (GUI). Microsoft fulfilled this wish in 1985 with Windows 1.0, which imitated the GUI developed by Xerox back in the 1970s. Apple also launched with a GUI around this time. Users thus no longer had to type commands to open programs - they could simply click on an icon with their mouse. CP/M and PC-DOS/MS-DOS aren’t the only well-known disk operating systems. Other widely used DOS include: • Commodore DOS: Commodore DOS was developed in 1977 and is located on the disk rather than in the computer, setting it apart from most other disk operating systems. This actually makes it a firmware r...

3 ½-inch floppy drive • Sony introduces the first 3 ½-inch floppy drives and diskettes in 1981. The first significant company to adopt the 3 ½-inch floppy for general use was Hewlett-Packard in 1982, an event which was critical in establishing momentum for the format and which helped it prevail over the other contenders for the microfloppy standard, including 3-inch, 3 ¼-inch, and 3.9-inch formats. The Computer Programme debuts on the BBC • The British Broadcasting Corporation’s Computer Literacy Project hoped “to introduce interested adults to the world of computers.” Acorn produces a popular computer, the BBC Microcomputer System, so viewers at home could follow along on their own home computers as they watched the program. The machine was expandable, with ports for cassette storage, serial interface and rudimentary networking. A large amount of software was created for the “BBC Micro,” including educational, productivity, and game programs. Apollo Computer unveils its first workstation, its DN100 • The DN100 is based on the Motorola 68000 microprocessor, high-resolution display and built-in networking - the three basic features of all workstations. Apollo and its main competitor, Sun Microsystems, optimized their machines to run the computer-intensive graphics programs common in engineering and scientific applications. Apollo was a leading innovator in the workstation field for more than a decade, and was acquired by Hewlett-Packard in 1989. Arnie Katz, Joyce Worley-Kat...

Account icon An icon in the shape of a person's head and shoulders. It often indicates a user profile. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • All • A-Z • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Featured • • About • • • • • • • • Follow • • • • • • • • Subscriptions • • Twitter icon A stylized bird with an open mouth, tweeting. Twitter LinkedIn icon The word "in". LinkedIn Fliboard icon A stylized letter F. Flipboard Facebook Icon The letter F. Facebook Email icon An envelope. It indicates the ability to send an email. Email Link icon An image of a chain link. It symobilizes a website link url. Copy Link Read in app Paterson was a designer and engineer at Seattle Computer Products. When his company needed a way to test a new computer chip, a 16-bit Intel 8086, he wrote QDOS -- Quick and Dirty Operating System. In order to put together the operating system so quickly, Paterson copied the APIs of another major operating system, called CP/M, by going through the manual to make sure it was fully compatible. It worked, and QDOS was later commercially available under the name 86-DOS. Gates shared plenty of ideas with IBM and even told them he'd write an operating system for them. Instead of writing one, Gates reached out to Paterson and purchased 86-DOS from him, allegedly for $50,000. Microsoft turned it into Microsoft Disk Operating System, or MS-DOS, which they introduced on this day in 19...

This article needs additional citations for Please help Find sources: · · · · ( August 2009) ( A disk operating system ( DOS) is a computer Disk operating systems for History [ ] Early computers predate disk drives, floppy disks, or modern In the early 1960s, as disk drives became larger and more affordable, various mainframe and minicomputer vendors introduced disk operating systems and modified existing operating systems to use disks. By the time IBM announced the Most home and personal computers of the late 1970s and 1980s used a disk operating system, most often with "DOS" in the name and simply referred to as "DOS" within their respective communities: Usually, a disk operating system was loaded from a disk. Among the exceptions were Commodore, whose DOS resided on ROM chips in the OS extensions [ ] • • • • • • • • GDOS and G+DOS is for the Main OSes [ ] Some disk operating systems are the operating systems for the entire computer system. • The • The SIPROS, • The • The IBM Basic Operating System/360 • The • • • See also [ ] • References [ ] • Wilkinson, Bill (1982). Inside Atari DOS. Greensboro, NC: COMPUTE! Books. 0-942386-02-7. • A Narrative Description of the Burroughs B5500 Disk File Master Control Program (PDF). Systems Documentation. Burroughs. October 1966. 1023579. • (PDF). CDC. • GE-635 Comprehensive Operating Supervisor (GECOS) (PDF). General Electricn. July 1964. CPB-1002. • IBM System/360 Basic Programming Support and IBM Basic Operating System/360 Program...

An MS DOS was the Microsoft Disk operating system which dominated operating system market for personal computers (PC) throughout 1980s. The original operating system was developed by American computer programmer Timothy Paterson who was a developer for Seattle computer products wrote the original operating system for Intel Corporation 8086 microprocessor in 1980s. There are a number of Web Hosting providers available. You may In this article we will learn more about MS-DOS operating system, its features, advantages, and limitations. Definition – MS DOS The command line-based MS-DOS was initially named as QDOS (Quick and dirty operating system) and renamed later as 86-DOS. MS-DOS allows users to navigate, open and navigate files and folders on their computers from command line instead of a GUI interface like Windows. Origin Its origin dates back with two earlier operating systems CP/M and QDOS. CP/M (Control program for Microcomputers) was created in mid 1970s by Gary Kildall of Digital Research. It was an 8-bit operating system then in 1980s Tom Paterson of Seattle Computer Products developed QDOS (Quick and Dirty Operating System) for Intel new 16-bit 8086 CPU. A year later in 1981 Microsoft purchased exclusive rights to sell the system and renamed MS-DOS and was last updated in 1994 when MS-DOS 6.22 was released. From 1981 through 1997 it underwent several iterations and revisions. Features MS-DOS offers file system to organize, read and write files to the disk storage. ...

4 Facts about DOS • Each of the files saved in DOS must have a unique title. The name consists of an optional drive letter, an optional path, desired filename, and an optional extension. • DOS saves all recent information retrieved by users. Therefore, it automatically stores current information and buffers essential information that users accidentally deleted. • DOS does not allow users to use the names AUX, PRN, LST, NUL, and CON in creating or renaming their files because they are reserved system names. • DOS was a Character-based User Interface (CUI) that could only save text-based files. This made users opt for Graphical User Interface (GUI), which was user-friendly and could store Graphics to a floppy disk. What is DOS: Explained DOS is an acronym for Disk Operating System that runs on the disk drive. DOS is responsible for managing and controlling program activities and saved data in the storage system. It was primarily created to operate on At first, DOS was owned by a Seattle company, Seattle Computer Products (SCP), and was initially created to serve the SCP’s 8086 cards. It was known as QDOS and later renamed 86-DOS. At this time, IBM asked Quick Facts Creator (person) Tim Paterson Original Price $40 Operating System DOS Developed By (company) Microsoft Although the DOS was dominant in the 1980s, it was gradually replaced by newly introduced operating systems such as UNIX and GUI. Furthermore, most DOS users stopped using it after the release of Windows 95, Wind...

4 Facts about DOS • Each of the files saved in DOS must have a unique title. The name consists of an optional drive letter, an optional path, desired filename, and an optional extension. • DOS saves all recent information retrieved by users. Therefore, it automatically stores current information and buffers essential information that users accidentally deleted. • DOS does not allow users to use the names AUX, PRN, LST, NUL, and CON in creating or renaming their files because they are reserved system names. • DOS was a Character-based User Interface (CUI) that could only save text-based files. This made users opt for Graphical User Interface (GUI), which was user-friendly and could store Graphics to a floppy disk. What is DOS: Explained DOS is an acronym for Disk Operating System that runs on the disk drive. DOS is responsible for managing and controlling program activities and saved data in the storage system. It was primarily created to operate on At first, DOS was owned by a Seattle company, Seattle Computer Products (SCP), and was initially created to serve the SCP’s 8086 cards. It was known as QDOS and later renamed 86-DOS. At this time, IBM asked Quick Facts Creator (person) Tim Paterson Original Price $40 Operating System DOS Developed By (company) Microsoft Although the DOS was dominant in the 1980s, it was gradually replaced by newly introduced operating systems such as UNIX and GUI. Furthermore, most DOS users stopped using it after the release of Windows 95, Wind...

Account icon An icon in the shape of a person's head and shoulders. It often indicates a user profile. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • All • A-Z • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Featured • • About • • • • • • • • Follow • • • • • • • • Subscriptions • • Twitter icon A stylized bird with an open mouth, tweeting. Twitter LinkedIn icon The word "in". LinkedIn Fliboard icon A stylized letter F. Flipboard Facebook Icon The letter F. Facebook Email icon An envelope. It indicates the ability to send an email. Email Link icon An image of a chain link. It symobilizes a website link url. Copy Link Read in app Paterson was a designer and engineer at Seattle Computer Products. When his company needed a way to test a new computer chip, a 16-bit Intel 8086, he wrote QDOS -- Quick and Dirty Operating System. In order to put together the operating system so quickly, Paterson copied the APIs of another major operating system, called CP/M, by going through the manual to make sure it was fully compatible. It worked, and QDOS was later commercially available under the name 86-DOS. Gates shared plenty of ideas with IBM and even told them he'd write an operating system for them. Instead of writing one, Gates reached out to Paterson and purchased 86-DOS from him, allegedly for $50,000. Microsoft turned it into Microsoft Disk Operating System, or MS-DOS, which they introduced on this day in 19...

After Bill Gates found out that IBM was looking for an alternative operating system to the one it had originally planned, he bought the rights to QDOS (Quick and Dirty Operating System) from a small software company. IBM acquired the license from Microsoft and integrated it into the IBM PC as PC-DOS 1.0. PC-DOS took inspiration from CP/M (the operating system IBM had originally planned) and leading Microsoft to completely reprogram it. PC-DOS 2.0 then came to market as the first reasonably functioning operating system. Since IBM did not have an exclusive license for the operating system, Microsoft could also sell it to other companies. Under the name MS-DOS, it became one of the most popular operating systems of its time. In 1982, over 50 companies had licensing agreements for Microsoft’s disk operating system. As time went on, DOS users asked more and more of their graphical user interface (GUI). Microsoft fulfilled this wish in 1985 with Windows 1.0, which imitated the GUI developed by Xerox back in the 1970s. Apple also launched with a GUI around this time. Users thus no longer had to type commands to open programs - they could simply click on an icon with their mouse. CP/M and PC-DOS/MS-DOS aren’t the only well-known disk operating systems. Other widely used DOS include: • Commodore DOS: Commodore DOS was developed in 1977 and is located on the disk rather than in the computer, setting it apart from most other disk operating systems. This actually makes it a firmware r...

By • Former Senior Technology Editor What is MS-DOS (Microsoft Disk Operating System)? MS-DOS stands for Microsoft Disk Operating System and is also known as Microsoft DOS. MS-DOS was the Microsoft-marketed version of the first operating system ( In 1981, IBM licensed and marketed its PC-DOS rebranding of MS-DOS to run on IBM PCs. MS-DOS was released for x86 computers, went through eight major versions and was ultimately retired from all active support in 2006. Most users of either DOS system simply referred to it as C:> The default command prompt shows the disk drive currently in use. This type of computer interface, where commands are input in response to a text prompt, is called a command-line interface ( In this example, drive "C:" represents the system's primary hard disk drive. When The first version of the Microsoft Windows OS was really an application that ran on top of MS-DOS. Today, Windows operating systems emulate MS-DOS to continue to support DOS -- or a DOS-like user interface -- for special purposes. In the 1970s before the PC was invented, IBM had a different and unrelated DOS that ran on smaller business computers. It was replaced by IBM's VSE (Virtual Storage Extended) OS. Why is MS-DOS used? Although most computer users prefer a modern OS with a graphical user interface ( • Education and research efforts let people learn about how a simple OS works. • Legacy systems persist throughout the world. In some cases, organizations prefer to continue using a sys...