PC-DOS 1.00 would lead to Microsoft becoming computing's top dog Microsoft continues to embrace open source. The source code and annotations provide insight into the operating system's earliest days.

Microsoft open-sourced 86-DOS 1.00 source code on GitHub for its 45th anniversary, according to PCWorld, including kernel and PC-DOS development snapshots. This historically significant software, ...

Thirty years ago, on November 20, 1985, Microsoft released version 1.0 of its new graphical shell called Windows. Much has been written about how Microsoft copied the Macintosh and Lisa, and how in ...