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Timeline showing releases of Windows for personal computers and servers. Microsoft Windows is a computer operating system developed by Microsoft. It was first launched in 1985 as a graphical operating system built on MS-DOS. The initial version was followed by several subsequent releases, and by the early 1990s, the Windows line had split into ...
The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers. Because of the large number and variety of available Linux distributions , they are all grouped under a single entry; see comparison of Linux distributions for a detailed ...
This is a list of Microsoft written and published operating systems. For the codenames that Microsoft gave their operating systems, see Microsoft codenames. For another list of versions of Microsoft Windows, see, List of Microsoft Windows versions.
MS-DOS (acronym for Microsoft Disk Operating System) is an operating system for x86-based personal computers mostly developed by Microsoft.Collectively, MS-DOS, its rebranding as IBM PC DOS, and some operating systems attempting to be compatible with MS-DOS, are sometimes referred to as "DOS" (which is also the generic acronym for disk operating system).
When the operating system creates a new process, that process is initially labeled as NOT RUNNING, and is placed into a queue in the system in the NOT RUNNING state. The process (or some portion of it) then exists in main memory , and it waits in the queue for an opportunity to be executed.
General Motors Operating System made for IBM 701 [2] MIT's Tape Director operating system made for UNIVAC 1103 [3] [4] 1956 GM-NAA I/O for IBM 704, based on General Motors Operating System; 1957 Atlas Supervisor (Manchester University) (Atlas computer project start) BESYS , for IBM 704, later IBM 7090 and IBM 7094; 1958
The operating system provides an interface between an application program and the computer hardware, so that an application program can interact with the hardware only by obeying rules and procedures programmed into the operating system. The operating system is also a set of services which simplify development and execution of application programs.
MUSIC/SP – an operating system developed for the S/370, running normally under VM; OS ES – an operating system for ES EVM; PC-MOS/386 – DOS-like, but multiuser/multitasking; Prolog-Dispatcher – used to control Soviet Buran space shuttle. SINTRAN III – an operating system used with Norsk Data computers. SkyOS – commercial desktop OS ...