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  1. A 4 bit modulo 16 ripple counter uses JK flip-flops. If the propagation delay of each FF is 50 ns. The max. clock frequency that can be used is equal to

  2. A.
    20 MHz
    B.
    10 MHz
    C.
    5 MHz
    D.
    4 MHz

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    Answer : Option C

    Explanation :

    Propagation Delay for one FF is 50 nsec. For 4 FF = 50 x 4 = 200 nsec..


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