Windows OS product name and internal version number

Although the naming of Windows varies by many factors, its internal version numbers are in the same line, from Windows 1.0 to Windows 2.0, Windows 3.0, to Windows 95, the version number is Windows 4.0, and subsequent Windows 9x are windows 4 series.

Before the release of Windows 7, Microsoft briefly mentioned the versions of each windows and explained why to name the next-generation operating system Windows 7. In fact, the version number of Windows 7 is the same as that of Vista, But windows 6 is also compatible with Windows 7.

The Microsoft msdn technical website provides a list of versions of each operating system currently in use, which is a simple summary to help Windows users understand the system they are using, it is also convenient for programming to determine the system version.

Operating System	Version Number
Windows 1.0	1.04
Windows 2.0	2.11
Windows 3.0	3
Windows NT 3.1	3.10.528
Windows for workgroups 3.11	3.11
Windows NT Workstation 3.5	3.5.807
Windows NT Workstation 3.51	3.51.1057
Windows 95	4.0.950
Windows NT Workstation 4.0	4.0.1381
Windows 98	4.1.1998
Windows 98 Second Edition	4.1.2222
Windows ME	4.90.3000
Windows 2000 Professional	5.0.2195
Windows XP	5.1.2600
Windows XP Professional x64 Edition	5.2.3790
Windows Server 2003	5.2
Windows Server 2003 r2	5.2
Windows Vista	6.0.6000
Windows Server 2008	6.0
Windows Server 2008 r2	6.1
Windows 7	6.1.7600
Windows 8	6.2.9200