COMPUTER SOFTWARE
SYSTEM SOFTWARE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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PC-DOS
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MS-DOS
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Either A or B
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None of the above
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Detailed explanation-1: -The first IBM PC, formally known as the IBM Model 5150, was based on a 4.77 MHz Intel 8088 microprocessor and used Microsoft´s MS-DOS operating system.
Detailed explanation-2: -Microsoft made IBM PC DOS for IBM. It and MS-DOS were identical products that eventually diverged starting with MS-DOS version 6.0. Digital Research did not follow Microsoft’s version numbering scheme. For example, MS-DOS 4, released in July 1988, was followed by DR DOS 5.0 in May 1990.
Detailed explanation-3: -A year later, fledgling company Microsoft purchased exclusive rights to sell the system, renamed MS-DOS, to IBM for their newly developed IBM-PC. IBM-compatible versions were marketed as PC-DOS.
Detailed explanation-4: -IBM initially announced intent to support multiple operating systems: CP/M-86, UCSD p-System, and an in-house product called IBM PC DOS, developed by Microsoft.