When did IBM release the first version of disk operating system DOS version 1.0?
A. 1981
B. 1982
C. 1983
D. 1984
E. None of the above
Answer: Option A
Solution(By Examveda Team)
In 1981 IBM release the first version of disk operating system DOS version 1.0.This Question Belongs to Computer Fundamentals >> Operating System
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