Use for questions about programming with or for Windows 7, a past release of Microsoft Windows. General software or troubleshooting questions not directly related to programming are off topic and should be posted on Super User
Windows 7 is an edition of Microsoft Windows, released to manufacturing on July 22, 2009. Windows 7 is the successor to Windows Vista, which was released three years prior, and is succeeded by Windows 8.
A fully detailed description of Windows 7 can be found at the Wikipedia page on Windows 7 and also on the Microsoft website. It's based on the Windows NT line of Windows.