This document provides a brief history of Microsoft Windows operating systems from version 1.0 in 1983 to Windows 8 in 2012. It describes the key features and changes introduced in each new version, including the introduction of the graphical user interface in Windows 2.0 and 3.0, the addition of networking capabilities in Windows for Workgroups 3.1, the transition to a 32-bit architecture in Windows NT 3.1, and the introduction of the Start menu and taskbar in Windows 95. It also discusses new versions such as Windows XP, Windows Vista, Windows 7 and the touch-friendly modern UI in Windows 8.