HISTORY OF OS

Microsoft Window announcenment

Nov 10, 1983

Bill Gates announces Microsoft Windows price $795

First Microsoft Windows 1.0

Nov 20, 1985

Microsoft Windows 1.0 is introduced in November 20, 1985 and is initially sold for $100.00.

Microsoft Windows 2.0

Dec 9, 1987

Microsoft Windows 2.0 was released December 9, 1987 and is initially sold for $100.00.

Microsoft Windows 386

Dec 9, 1987

Microsoft Windows/386 or Windows 386 is introduced December 9, 1987 and is initially sold for $100.00.

Windows Windows 286

Jun 1, 1988

Windows 286 is introduced June, 1988 and is initially sold for $100.00.

Microsft Windows 3.0 RELEASED

May 22, 1990

Microsoft Windows 3.0 was released May, 22 1990. Microsoft Windows 3.0 full version was priced at $149.95 and the upgrade version was priced at $79.95.

Windows NT

Sep 1, 1991

Following its decision not to develop operating systems cooperatively with IBM, Microsoft changes the name of OS/2 to Windows NT.

Multimedia

Oct 17, 1991

Microsoft Windows 3.0 or Windows 3.0a with multimedia was released October, 1991.
price $999

Microsoft 3.1

Sep 17, 1992

Microsoft Windows 3.1 was released April, 1992 and sells more than 1 Million copies within the first two months of its release.
price € 38,45

Microsoft Windows NT 3.1

Jul 27, 1993

Microsoft Windows NT 3.1 was released July 27, 1993.
price £139.99

Licensed

Sep 17, 1993

1993 The number of licensed users of Microsoft Windows now totals more than 25 Million.

Microsoft Windows3.11

Dec 31, 1993

Microsoft Windows 3.11, an update to Windows 3.1 is released December 31, 1993.

Workgroups 3.11

Feb 17, 1994

Microsoft Windows for Workgroups 3.11 was released February, 1994.

Microsoft Windows NT 3.5

Sep 21, 1994

Microsoft Windows NT 3.5 was released September 21, 1994.
price £129.99

Microsoft Windows NT 3.51

May 30, 1995

Microsoft Windows NT 3.51 was released May 30, 1995.