1981
1982
1983
1984 E. None of the above
Answer is Right!
Answer is Wrong!
The correct answer is: A. 1981
IBM released the first version of disk operating system DOS version 1.0 on August 12, 1981.
It was developed by Microsoft for IBM’s first personal computer, the IBM PC. DOS was a single-user, single-tasking operating system that allowed users to run programs and access files on a disk. It was a major improvement over the previous operating system for the IBM PC, CP/M, which was limited to two floppy disks and did not support hard drives.DOS was a major success for IBM and Microsoft. It was the standard operating system for IBM PCs for many years, and it was also used on many other computers, including clones of the IBM PC. DOS was eventually replaced by Windows, but it remains an important part of the history of personal computing.
Option B, 1982, is incorrect because DOS was released in 1981. Option C, 1983, is incorrect because DOS was released in 1981. Option D, 1984, is incorrect because DOS was released in 1981. Option E, None of the above, is incorrect because DOS was released in 1981.