In RS flip-flop, the output of the flip-flop at the time (t+1) is the same as the output at time t, after the occurrence of a clock pulse if :

1. AS=R=1
2. BS=0, R=1
3. CS=1, R=0
4. DS=R=0

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: D. S=R=0

Explanation

S = R = 0 is the hold state: Q(t+1) = Q(t).