PC DOS

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IBM PC DOS.png
PC DOS
Developer Microsoft, IBM
Publisher IBM
Platforms x86
Released August 1981-2003
Added to
Museum
Not yet

PC DOS, also known as IBM PC DOS, is an operating system by Microsoft and IBM.

History

Seattle Computer Products released 86-DOS in August 1980. It was licensed and then purchased by Microsoft. The first versions of this operating system and its successors were heavily based on the CP/M operating system.

Microsoft licensed 86-DOS 1.10 to IBM, which released it as PC DOS 1.0 on August 12, 1981.

In 1982, Microsoft began releasing it as MS-DOS while IBM continued to release it as PC DOS. The first version to be published by both companies was PC DOS 1.10 which was the basis for MS-DOS 1.24.

PC DOS version 1.0 was released on August 12, 1981.

PC DOS 1.10 was the basis for MS-DOS 1.24, which were both released in 1982.

1983 saw MS-DOS 1.25, which was the basis for DOS distributions by manufacturers other than IBM. It was used as the basis for a DOS by Compaq as Compaq-DOS 1.12, by Texas Instruments as TI BOOT V. 1.13, by Zenith as Z-DOS 1.01 and 1.19. These were also alternately packaged as MS-DOS 1.01.

MS-DOS 2.0, which was also released in 1983, was completely rewritten from its predecessors.

Versions of PC DOS

Title Released Date Added to the Museum Notes
PC DOS 1.0 1981 Not yet. PC DOS 1.0 was extended from 86-DOS 1.10.
PC DOS 1.10 1982 Not yet. 1.10 was the basis for MS-DOS 1.24, the first release of that OS.
PC DOS 2.0 1983 Not yet 2.0 was completely rewritten from its predecessors.