Multiple choice

Consider the following circuit involving a positive edge triggered D -FF.

Consider the following timing diagram. Let Ai represent the logic level on the line A in the i − th clock period.

Let A represent the complement of A. The correct output sequence on Y over the clock perids 1 through 5 is

  1. A0A1A1'A3A4

  2. A0A1A2'A3A4

  3. A1A2A2'A3A4

  4. A1A2'A3A4A5

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Explanation