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The given fig...

Question

The given figure shows a ripple counter using positive edge triggered flip-flops.
If the present state of the counter is $Q_{2}$ $Q_{1}$ $Q_{0}$ = 011,
then its next state ( $Q_{2}$ $Q_{1}$ $Q_{0}$ ) will be

A

101

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B

100

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C

111

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D

010

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Solution

The correct option is B 100
$Q_{2}$ $Q_{1}$ $Q_{0}$ = 011
1st clk $\to$ $Q_{2}$ $Q_{1}$ $Q_{0}$ =100
${¯ Q}_{0}$ = 1 (triggers $T_{1}$ )
${¯ Q}_{1}$ = 1(tiggeres $T_{2}$ )

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