GATE | CS | 2005 | Digital logic | Sequential circuit | Question 62

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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 periods 1 through 5 is

A0 Al A1' A3 A4

A0 Al A2' A3 A4

Al A2 A2' A3 A4

Al A2' A3 A4 A5'

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