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Advanced Microprocessors

  1. Initially Q0 = Q1 = 0. What will be the logic states of Q0and Q1 immediately after 777th clock pulse for the figure shown below—
    1. 01
    2. 10
    3. 11
    4. 00
Correct Option: B

This is Johnson counter as Q is feedback to input. This means it is a down counter. Number of state = 2n = 4

So, After 776th clk pulse → State is 00, as
777
= 194
4

and 1 remainder. Hence, at 777th clk pulse state is 10.



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