) is a personal computer operating system developed by Microsoft.It is a part of the Windows NT family of operating systems.Windows 7 was released to manufacturing on July 22, 2009, and became generally available on October 22, 2009, less than three years after the release of its predecessor, Windows Vista.
Windows 7 was primarily intended to be an incremental upgrade to the operating system intending to address Windows Vista's poor critical reception while maintaining hardware and software compatibility.
Windows 7 continued improvements on Windows Aero (the user interface introduced in Windows Vista) with the addition of a redesigned taskbar that allows applications to be "pinned" to it, and new window management features.
Other new features were added to the operating system, including libraries, the new file sharing system Home Group, and support for multitouch input.
A new "Action Center" interface was also added to provide an overview of system security and maintenance information, and tweaks were made to the User Account Control system to make it less intrusive.
Major features were planned for Blackcomb, including an emphasis on searching and querying data and an advanced storage system named Win FS to enable such scenarios.
However, an interim, minor release, codenamed "Longhorn," was announced for 2003, delaying the development of Blackcomb.
By the middle of 2003, however, Longhorn had acquired some of the features originally intended for Blackcomb.
Windows 7 also shipped with updated versions of several stock applications, including Internet Explorer 8, Windows Media Player, and Windows Media Center.
In contrast to Windows Vista, Windows 7 was generally praised by critics, who considered the operating system to be a major improvement over its predecessor due to its increased performance, its more intuitive interface (with particular praise devoted to the new taskbar), fewer User Account Control popups, and other improvements made across the platform.