Question

When both inputs of SR latches are low, the latch ___________

(a) Q output goes high

(b) Q’ output goes high

(c) It remains in its previously set or reset state

(d) it goes to its next set or reset state

The question was asked during a job interview.

This question is from Latches in section Flip-Flops of Digital Circuits

Answer 1

Correct choice is (c) It remains in its previously set or reset state

For explanation I would say: When both inputs of SR latches are low, the latch remains in it’s present state. There is no change in output.