Windows Operating System
Microsoft Windows Operating System Evolution Overview Windows 1.0 Windows 1.0 is a graphical operating environment released by Microsoft in November 1985. It marked the company’s first major attempt to bring a visual, mouse-driven interface to personal computers running MS-DOS, introducing the foundation for what became the widely used Windows family of operating systems. Key facts Release date: November 20, 1985 Developer: Microsoft Platform: IBM PC-compatible systems Interface type: 16-bit graphical shell over MS-DOS End of support: December 31, 2001 Development and background Windows 1.0 was conceived to provide users with multitasking and graphical capabilities unavailable in command-line DOS. It ran on top of MS-DOS rather than replacing it, using a cooperative multitasking model. Early development began in 1981 under the codename “Interface Manager,” with Bill Gates positioning it as a response to the graphical innovations of Apple’s Lisa and Macintosh systems. User interface and features The system displayed tiled windows (not overlapping) and supported basic applications […]






