Graphical user interface (GUI) from Microsoft that has become the standard for IBM PCs and clones using the MS-DOS operating system.
An operating system introduced by Microsoft Corporation in 1983. Windows is a multitasking graphical user interface environment that runs on MS-DOS–based computers (Windows 3.x. and Windows for Workgroups), and as a self-contained operating system for desktop computers (Windows 9x and Windows Me), workstations (Windows NT Workstation, Windows 2000 Professional), and network servers (Windows NT Server, Windows NT Enterprise Edition, Windows 2000 Server, and Windows 2000 Advanced Server). The most recent versions of Windows are Windows XP Home (home and entertainment use) and Professional (advanced computing, businesses, and large organizations). The next generation of Windows server products will be the Windows .NET Server family. Windows provides a standard graphical interface based on drop-down menus, windowed regions on the screen, and a pointing device such as a mouse.