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Flip-Flops - Technical MCQs

Q1:

A gated S-R flip-flop goes into the CLEAR condition when ________.

A S is HIGH; R is LOW; EN is HIGH

B
S is LOW; R is HIGH; EN is HIGH

C
S is LOW; R is HIGH; EN is LOW

D
S is HIGH; R is LOW; EN is LOW

ANS:B -

S is LOW; R is HIGH; EN is HIGH

Normally for CLEAR condition Q = 0; Qb = 1.

This will occurs when EN = 1; S = 0, R = 1.