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Discussion :: Digital Electronics

  1. A digital system is required to amplify a binary encoded audio signal. The user should be able to control the gain of the amplifier from a minimum to a maximum in 100 increments. The minimum number of bits required to encode, in straight binary is,

    2. A.
    8
    B.
    6
    C.
    5
    D.
    7

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    Answer : Option D

    Explanation :

    Let 6 bit required = 26 = 64, which indicate 64 increment.

    If 7 bit = 27 = 128, for 100 increment, 7 bit required.

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