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Logic Gates

Q1: The output of an OR gate with three inputs, A, B, and C, is LOW when ________.

A A = 0, B = 0, C = 0

B A = 0, B = 0, C = 1

C A = 0, B = 1, C = 1

D all of the above

ANS:A - A = 0, B = 0, C = 0

Because in OR GATE addition is performed between two variables. A/q to queston output is low. In OR GATE output is low in one condition when all inputs are low. Y=A+B+C when the inputs are 0 then output will be 0.



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