What is the Boolean expression for the output of a two-input NOR gate with inputs and ?
Answer and explanation
Correct answer: D.
- Step 1: An OR gate produces the logical sum: .
- Step 2: A NOR gate is an OR gate followed by an inverting NOT gate.
- Step 3: The resulting inverted Boolean output is (which also equals by De Morgan's theorem).
Answer
.
Why not the others: is the Boolean expression for a NAND gate; is the OR gate; is the AND gate.
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