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Evolution of computing: from vacuum tubes to microprocessors
The first generation of computers, which began in the 1940s and 1950s, did not use microprocessors. They were large, room-sized machines that used vacuum tubes as the main components for processing. We primarily used them for scientific and military calculations.
Microprocessors, small integrated circuits containing the central processing unit (CPU) of a computer, were developed in the 1970s. The use of microprocessors in computers marked the beginning of the second generation of computers and led to the development of smaller, more affordable, and more powerful computers.