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Logic Gates - Technical MCQs

Q1:

The output of a NOR gate is HIGH if ________.

A all inputs are HIGH

B any input is HIGH

C any input is LOW

D all inputs are LOW

ANS:D - all inputs are LOW

Simply NOR means not+or so in 3 cases of or gate is high if any one of the input is high or both the inputs are high the output is high but in only one case the two inputs are low the output is low. the inversion is added the or gate is changed to nor gate in this case only 1 input is high the two inputs are low.