Multiple choice

Consider the circuit in the diagram. The $\oplus$ operator represents Ex - OR. The D flip - flops are initialized to zeroes (cleared).

The following data: 100110000 is supplied to the “data” terminal in nine clock cycles. After that the values of q2 q1 q0 are:

  1. 000

  2. 001

  3. 010

  4. 101
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C Correct answer
Explanation

|||||| |---|---|---|---|---| | | q2| q1| q0| I/P| | initially | 0| 0| 0| -| || 0| 0| 1| 1| || 0| 1| 0| 0| || 1| 0| 0| 0| || 0| 0| 0| 1| || 0| 0| 1| 1| || 0| 1| 0| 0| || 1| 0| 0| 0| || 0| 0| 1| 0| || 0| 1| 0| 0|

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