In the diagram, inputs A and B are inverted separately, then passed through a NAND gate. Which truth table matches the output?
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Question

In the diagram, inputs A and B are inverted separately, then passed through a NAND gate. Which truth table matches the output?

G1 Physics · Accepted Answer

Output of the inverters: A̅ and B̅. NAND output is Y = NOT(A̅·B̅) = A + B. Evaluating rows (A,B) = (0,0),(0,1),(1,0),(1,1) gives Y = 0,1,1,1. Final answer: Option D.