Windows 7 (CD key)

Windows 7 is a version of the Microsoft Windows operating system, released on October 22, 2009. It was designed to address the issues users encountered with its predecessor, Windows Vista, and to offer improved performance, a more streamlined interface, and enhanced user experience.

Key features include a revamped taskbar with better program management, "Aero" visual effects for enhanced desktop aesthetics, and "Jump Lists" for easy access to frequently used programs and files. Windows 7 also introduced improved support for touch and handwriting recognition, bolstering its appeal for tablet PCs. It featured improved boot times, power management, and overall stability.

Available in several editions (Home Premium, Professional, and Ultimate, among others), Windows 7 catered to a variety of users, from casual home users to business environments. It retained compatibility with many Windows XP applications through "XP Mode" and was widely regarded for its reliability and user-friendly interface.

Windows 7 remained popular for many years, though Microsoft officially ended extended support for it on January 14, 2020, encouraging users to upgrade to newer versions for better security and performance.