Question

In an UP-counter, each flip-flop is triggered by ___________

(a) The output of the next flip-flop

(b) The normal output of the preceding flip-flop

(c) The clock pulse of the previous flip-flop

(d) The inverted output of the preceding flip-flop

I had been asked this question in an online interview.

The origin of the question is Up Down Counter in division Counters of Digital Circuits

Answer 1

Right answer is (b) The normal output of the preceding flip-flop

The explanation is: In an UP-counter, each flip-flop is triggered by the normal output of the preceding flip-flop. UP-counter counts from 0 to a maximum value.