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  1. Which of the following was used as circuitry for first generation of computers?
    1. Vacuum tube
    2. Transistors
    3. Integrated circuits
    4. Microprocessors
Correct Option: A

The computers of first generation (1946-1959) used vacuum tubes as the basic components for memory and circuitry for CPU and magnetic drums for memory. These computers relied on machine language, the lowest-level programming language understood by computers, to perform operations.


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