Multiple choice A NOR gate is ON only when all its inputs are ON Positive High OFF Reveal answer Fill a bubble to check yourself D Correct answer Explanation A NOR gate outputs ON (logic 1) only when all inputs are OFF (logic 0). The NOR operation is equivalent to NOT-OR: it outputs 1 only when all inputs are 0, and outputs 0 if any input is 1. This makes it the logical complement of the OR gate.