Microsoft first introduced Windows 1.0 on November 20, 1985. Since the introduction of Windows the operating system has dominated personal computers ever since.

Microsoft first introduced Windows 1.0 on November 20, 1985. Since the introduction of Windows the operating system has dominated personal computers ever since. Not to be pedantic, but I don't seem to recall Windows "dominating" anything until version 3.1 came out. At that time, you still had a lot of software running in text mode, or firing up its own graphical environment from DOS. Berkeley Softworks' GeoWorks was out, then, too, and looking like pretty decent competition at the time. Windows' ultimate dominance may have been inevitable, but I don't recall it looking that way before '92.