Microsoft releases Windows 1.0.

On November 20, 1985, a small technology company out of Bellevue, Washington launched a 16-bit graphical operating system for the PC. Originally called Windows Premiere Edition.1, it soon became the foundation for the world’s most prevalent operating system and for one of the most dominant technology companies in history. Windows 1.0 is a graphical personal computer operating environment developed by Microsoft. Microsoft had worked with Apple Computer to develop applications for Apple’s January 1984 original Macintosh, the first mass-produced personal computer with a graphical user interface that enabled users to see user friendly icons on screen. Windows 1.0 was an important milestone for Microsoft, as it introduced the Microsoft Windows line, and in computer history in general. Windows 1.0 was declared obsolete and Microsoft stopped providing support and updates for the system on December 31, 2001.