Microsoft Windows 7 (Microsoft Windows NT 6.1) is the latest version of the Microsoft Windows operating system, successor to Windows Vista. The code names Blackcomb and Vienna were used during its development. Windows 7 has the improved kernel of its predecessor, and the arduous task wiping clean Vista's failure.
Date Windows 7 was commercialised : 22 October 2009.
There are six editions of the operating system: Windows 7 Starter, Windows 7 Home Basic, Windows 7 Home Premium, Windows 7 Professional, Windows 7 Enterprise, Windows 7 Ultimate. Like its predecessor, all these versions are available in 32 bit and 64 bit.
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