Question : Which among the following generations of computers used vacuum tubes?
Option 1: Fourth Generation
Option 2: Third Generation
Option 3: First Generation
Option 4: Second Generation
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Correct Answer: First Generation
Solution : The correct option is First Generation .
First-generation computers, including ENIAC and UNIVAC I, used vacuum tubes for electronic circuitry. Vacuum tubes were later replaced by transistors in the Second Generation, leading to improvements in reliability, size, and power consumption.
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