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Short for Microsoft Disk operating system, MS-DOS is a non-graphical command line operating system derived from 86-DOS that was created for IBM compatible computers. MS-DOS originally written by Tim Paterson and introduced by Microsoft in August 1981 and was last updated in 1994 when MS-DOS 6.22 was released. Today, MS-DOS is no longer used; however, the command shell, more commonly known as the Windows command line is still used by many users. In the picture to the right, is an example of what a MS-DOS window more appropriately referred to as the Windows command line looks like under Microsoft Windows.

Microsoft DOS History

Year Event
1981 Microsoft buys the rights for QDOS from Seattle Computer Products (SCP) for $25,000 on July 27, 1981.
1981 MS-DOS 1.0 was released August, 1981.
1982 MS-DOS 1.25 was released August, 1982.
1983 MS-DOS 2.0 was released March, 1983.
1984 Microsoft introduces MS-DOS 3.0 for the IBM PC AT and MS-DOS 3.1 for networks.
1986 MS-DOS 3.2 was released April, 1986.
1987 MS-DOS 3.3 was released April, 1987.
1988 MS-DOS 4.0 was released July, 1988.
1988 MS-DOS 4.01 was released November, 1988.
1991 MS-DOS 5.0 was released June, 1991.
1993 MS-DOS 6.0 was released August, 1993.
1993 MS-DOS 6.2 was released November, 1993
1994 MS-DOS 6.21 was released March, 1994
1994 MS-DOS 6.22 was released April, 1994

 

 


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