Windows/Codename

1983-85 windows-Windows 1.0
1991-1992 bombay-3.1

1993-1995 chicago-95

1995-1996 cario-nt 4.0

1997-1998 memphis-98

2000 = millineium-Me

2001 = whistler-xp

2004-2006 = longhorn-Vista