PC DOS 2.0

PC DOS/MS-DOS 2.0
Developer	Microsoft
Publisher	IBM, Microsoft
Platforms	x86
Released	2.0: March 1983 2.05/2.11: October 1983 PC DOS/MS-DOS 2.1/2.01: November 1983 2.2/2.3: 1983 2.13: July 1984 2.25: October 1985
Added to Museum	Not yet

PC DOS 2.0 is the second iteration of the PC DOS product line by Microsoft and IBM. It was extended into MS-DOS 2.0 and was also the basis for an operating system packaged by ITT.

History

A group of Microsoft programmers, led by Paul Allen, Mark Zbikowski, and Aaron Reynolds, rewrote PC DOS 2.0 completely from the 86-DOS base of PC DOS 1.0.

Versions

PC DOS and MS-DOS version 2.0 was released in March 1983.

MS-DOS 2.05, with international support, and MS-DOS 2.11, were released in October 1983. MS-DOS 2.11 was the basis of the ITT version named ITT-DOS 2.11 Version 2.

PC DOS and MS-DOS 2.1, as well as MS-DOS 2.01, were released in November 1983.

MS-DOS 2.2 and 2.3 were released in late 1983. MS-DOS 2.3 was the primary operating system for the Toshiba Pasopia 16.

MS-DOS 2.13, by Zenith, was released was released in July 1984.

MS-DOS 2.25 was released in October 1985. It was a version of 2.11 with better support for Japanese and Korean character sets.