Release of IBM PC DOS

IBM PC DOS, also known as IBM DOS or PC DOS, is a discontinued disk operating system for the IBM Personal Computer, its successors, and IBM PC compatibles. It was sold by IBM from the early 1980s into the 2000s. Developed by Microsoft, it was also sold by that company to the open market as MS-DOS.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

• Release of IBM PC DOS and Release of MS-DOS happened in the same year
• Release of IBM PC DOS happened 1 year after Release of 86-DOS
• Release of IBM PC DOS happened 2 years before Release of UNIX System V
• Release of IBM PC DOS happened 4 years after Release of OpenVMS
• Release of IBM PC DOS happened 4 years before Release of Windows 1.0

Timeline

1. Release of OpenVMSOctober 25, 1977
2. Release of 86-DOS1980
3. Release of IBM PC DOS (this page)August 1981
4. Release of MS-DOSAugust 12, 1981
5. Release of UNIX System V1983
6. Release of Windows 1.0November 20, 1985

Related

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• Release of Windows 7October 22, 2009
• Release of Windows 10July 29, 2015
• Release of Windows 8October 26, 2012
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• Release of Windows 98June 25, 1998
• Release of Windows PhoneNovember 8, 2010