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Sequential Logic Circuits

Q1:

To operate correctly, starting a ring counter requires:

A clearing all the flip-flops

B presetting one flip-flop and clearing all the others

C clearing one flip-flop and presetting all the others

D presetting all the flip-flops

ANS:B - presetting one flip-flop and clearing all the others

In-Ring counter, the feedback of the output of the FF is fed to the same FF's input. To operate correctly, starting a ring shift counter requires presetting one flip-flop and clearing all others so that it can shift to the next bit.



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