1.

To operate correctly, starting a ring shift counter requires __________(a) Clearing all the flip-flops(b) Presetting one flip-flop and clearing all others(c) Clearing one flip-flop and presetting all others(d) Presetting all the flip-flopsI had been asked this question at a job interview.This question is from Universal Shift Registers topic in portion Registers of Digital Circuits

Answer»

Correct choice is (b) Presetting one flip-flop and clearing all OTHERS

To elaborate: 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.



Discussion

No Comment Found

Related InterviewSolutions