The output of OR gate will be 0 when.

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12 + 2 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

The output of OR gate will be 0 when:

A = 0 , B = 1

A = 1 , B = 1

A = 0 , B = 0

A = 1 , B = 0