Forty-four years ago today, on April 24, 1981 (March 20, 1981), IBM launched the first personal computer. On April 24, 1981, IBM launched the first personal computer, also known as personal computer, abbreviated as PC, or PersonalComputer. Subsequent to the introduction of microprocessors by Intel and the introduction of operating systems by Microsoft, the development history is almost equivalent to the development of personal computers. The Microtel architecture completely replaced IBM's dominance in personal computers.