Question

Once an up-/down-counter begins its count sequence, it ___________

(a) Starts counting

(b) Can be reversed

(c) Can’t be reversed

(d) Can be altered

This question was posed to me in an interview for internship.

My query is from Up Down Counter in chapter Counters of Digital Circuits

Answer 1

Right choice is (d) Can be altered

The best I can explain: In up/down ripple counter once the counting begins, we can simply change the pulse M (mode control) M = 0 or 1 respectively for UP counter or Down counter.