8. Refering to the clock regions of the last question, during what region should the inputs of a flip-flop be established to initiate a output change from Qn to Qn+1?

  1. Region A
  2. Region B
  3. Region C
  4. Region D
  5. Region E

3 is CORRECT. Since the transistion Qn to Qn+1 will occur in region D, the inputs controlling this transistion must be established in Region C when the flip-flop is sleeping and outputing Qn.

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