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Digital Concepts - Technical MCQs

Q1:

The output of an OR gate is LOW when ________.

A all inputs are LOW

B any input is LOW

C any input is HIGH

D all inputs are HIGH

ANS:A - all inputs are LOW

AS We know the OR gate is the Addition and it gives high output only when any one of the inputs is high.

A B Y=A+B
0 0 0 LOW
0 1 1 HIGH
1 0 1 HIGH
1 1 1 HIGH