The correct answer is: C. 1983
The personal computer (PC) was voted ‘The Machine of the Year’ by the American Time magazine in 1983. This was a significant year in the history of the PC, as it marked the release of the IBM PC, which became the standard for personal computers in the 1980s and 1990s. The IBM PC was followed by a number of other successful personal computers, including the Apple Macintosh and the Commodore 64. The PC revolution had a profound impact on society, as it made computers accessible to millions of people for the first time.
Option A: 1970 is incorrect because the first personal computer, the Altair 8800, was not released until 1975.
Option B: 1975 is incorrect because the Altair 8800 was not widely adopted by the public.
Option D: 1987 is incorrect because the PC was already well-established by this time.
Option E: None of the above is correct because the PC was voted ‘The Machine of the Year’ in 1983.