This was Microsoft's first Operating System, and it also became the first widely used operating system for the IBM PC and its clones. MS-DOS 1.00 was actually a renamed version of QDOS, which Microsoft bought from a Seattle company, appropriately named Seattle Computer Products, in July 1981. MS-DOS 1.00 shipped with the new IBM Personal Computer on the 12th of August 1981.
|Microsoft Operating System Versions|
|Microsoft Operating System Versions:
Windows CE: 1.0 | 1.1 | 2.0 | 2.1 | 2.11 | 2.12 | 3.0 | 4.0 | 4.1 | 4.2 | 5.0
Windows Mobile: 2003 | 5.0
Previous Windows Codenames: Janus | Snowball | Kato | Daytona | Chicago | Memphis | Millennium | Cairo | Odyssey | Neptune | Whistler | Longhorn | Blackcomb