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Which of the following is first generation of computer ?

  • A.EDSAC
  • B.IBM-1401
  • C.CDC-1604
  • D.ICL-2900

Answer: A

Correct answer: EDSAC

EDSAC, built at Cambridge in 1949, used vacuum tubes and belongs to the first generation. The IBM-1401 and CDC-1604 are transistor machines of the second generation, and the ICL-2900 is later still.

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