The Windows operating systems

				DESKTOP SYSTEMS		SERVER SYSTEMS
1975				Microsoft is founded.
1981	Aug. 12: IBM introduces its personal computer with Microsoft's 16-bit operating system, MS-DOS 1.0.
1983	Sept. 29: Microsoft introduces Word for MS-DOS 1.0.
1985	Microsoft introduces Windows 1.0.
1987	Windows 2.0 launches.
1990	Windows 3.0 launches.
1993	Windows for Workgroups 3.11 launches.		Microsoft introduces first Windows Server operating system, Windows NT Advanced Server 3.1.
1994			Windows NT Server 3.5 launches.
1995	Aug. 24: Windows 95 launches.
1996			Windows NT Server 4.0 launches.
1997			Windows NT Server 4.0 Enterprise Edition launches.
1998	June 25: Windows 98 launches.		Windows NT Server 4.0 Terminal Server Edition launches.
1999	Windows 98 Second Edition launches.
2000	Windows 2000 Professional launches. Windows Millennium Edition launches.		Windows 2000 Server Family launches.
2001	Oct. 25: Windows XP launches.
2003			April: Windows Server 2003 scheduled to launch.

* Windows Longhorn expected to launch in 2004 or early 2005.

Source: Microsoft

Microsoft at midlife: The series