When was the IBM XT microcomputer released in the market?

1970
1971
1983
1986 E. None of the above

The IBM XT microcomputer was released in the market in 1983. It was a significant upgrade from the IBM PC, which was released in 1981. The XT had a larger hard drive, more memory, and a faster processor. It also had a number of new features, such as a built-in speaker and a serial port. The XT was a very popular computer, and it helped to establish IBM as a major player in the personal computer market.

Option A: 1970 is incorrect. The IBM XT was not released until 1983.

Option B: 1971 is incorrect. The IBM XT was not released until 1983.

Option C: 1983 is correct. The IBM XT was released in 1983.

Option D: 1986 is incorrect. The IBM XT was released in 1983.

Option E: None of the above is correct. The IBM XT was released in 1983.