A 4 bit modulo-16 ripple counter uses JK flip-flops. If the propagatio – McqOptions

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1.	A 4 bit modulo-16 ripple counter uses JK flip-flops. If the propagation delay of each flip-flop is 50 nsec, the maximum clock frequency that can be used is equal to
A.	20 MHz
B.	10 MHz
C.	5 MHz
D.	4 MHz
Answer» D. 4 MHz

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