A) Multipurpose System Digital Offline Sign
B) Microsoft Disk Operating System
C) Multi System Disk Operating System
D) Microchip Sign Digital System
Correct Answer: B
Solution :
MS-DOS stands for Microsoft Disk Operating System. It is a discontinued operating system for x86-based personal computers mostly developed by Microsoft. It was the main operating system for IBM PC compatible personal computers during the 1980s and 1990s.
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