Which of the following symbol represent the NOR gate? I. The standard OR-shaped gate symbol with a small bubble (inversion circle) at the output.
Which of the following symbol represent the NOR gate?
I. The standard OR-shaped gate symbol with a small bubble (inversion circle) at the output.
II. The alternative 'distinctive shape' symbol: an AND-shaped (D-shaped) body with bubbles on both inputs.
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Correct answer: (C) Both I and II
Explanation
A NOR gate can be drawn as an OR symbol with an output bubble, or, by De Morgan's law (A + B)' = A'B', as an AND symbol with bubbles on both inputs. Both represent NOR.