Consider the following circuits. Assume all gates to have finite propa – McqOptions

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1.	Consider the following circuits. Assume all gates to have finite propagation delayWhich of these circuits generate a periodic square wave at the output Vo?
A.	(1) only
B.	(1) and (2) only
C.	(2) (3) and (4) only
D.	All (1) (2) (3) and (4)
Answer» D. All (1) (2) (3) and (4)

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