Microsoft Windows 3.1 was released in April 1992 and sells more than one million copies in the first two months of its release. Microsoft Windows 3.0 or Windows 3.0a with multimedia was released in October 1991. Developed by David Cutler, Windows NT was built on a different architecture than IBM's OS/2 operating system. Microsoft Windows 3.0 full version was priced at $149.95 and the upgrade version was priced at $79.95.įollowing its decision not to develop operating systems cooperatively with IBM, Microsoft changed the name of their version of OS/2, originally named NT OS/2 3.0, to Windows NT. Microsoft Windows 3.0 was released on May, 22 1990.

Microsoft Windows/286 or Windows 286 was introduced in June 1988, and initially sold for $100.00. Microsoft Windows/386 or Windows 386 was introduced on December 9, 1987, and was initially sold for $100.00. Microsoft Windows 2.0 was released on December 9, 1987, and was initially sold for $100.00. Microsoft Windows 1.0 was introduced on November 20, 1985, and was initially sold for $100.00. Updated: by Computer Hope See the codename definition for a listing of Microsoft codenames.īill Gates announced Microsoft Windows on November 10, 1983.

Windows 7 release day