Discussion
The main electronic component used in first generation computers was
Answer: B
Correct answer: Vacuum Tubes and Valves
First-generation computers (about 1940-56) - ENIAC, UNIVAC - switched with vacuum tubes. They were enormous, consumed great quantities of power, generated much heat, and failed often, since a machine with 18,000 tubes will always have one about to burn out. The transistor, in the second generation, cured all four problems at once.
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