DOS: Difference between revisions
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[[Category:Operating Systems]]
'''DOS''' ('''D'''isk '''O'''perating '''S'''ystem) is a generic name for a variety of 16-bit text-mode [[:Category:Operating Systems|operating systems]]. (Note that "DOS" is pronounced ''dahss'', not ''dose''.) The archetypal example is '''[[wp:MS-DOS|MS-DOS]]''', [[wp:Microsoft|Microsoft's]] long-running OS that was also sold by IBM as [[wp:PC-DOS|PC-DOS]]. MS-DOS (and PC-DOS) originated as [[wp:86-DOS|86-DOS]] (eventually renamed QDOS) from Seattle Computer Products, which was intended to be a [[wp:CP/M|CP/M]] clone. Other (modern) examples include [[wp:DR-DOS|DR-DOS]] and [[wp:FreeDOS|FreeDOS]].
DOS by itself had no graphical interface; instead, if one was desired, users had to buy one seperately. Several GUIs were available for DOS, but [[Windows]] displaced them all with [[wp:Windows 3.0|version 3]]. DOS was still present in Windows 95, 98, and Me, but is totally absent from all NT-based versions (including NT, 2000, XP, Vista, and Windows 7), instead being emulated (via [[wp:Virtual DOS machine|NTVDM]] and [[wp:cmd.exe|cmd.exe]]).
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