The number of select lines needed for an 8-to-1 multiplexer is:

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The number of select lines needed for an 8-to-1 multiplexer is:

  1. A.

    1

  2. B.

    2

  3. C.

    3

  4. D.

    8

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Correct answer: C

For an 8-to-1 multiplexer, the number of select lines n satisfies 2^n = 8. Hence n = 3.

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