For following logic diagram which expression is true? Inputs A and B each pass through a NOT gate; the two inverted signals feed one AND gate. The original…
For following logic diagram which expression is true?
Inputs A and B each pass through a NOT gate; the two inverted signals feed one AND gate. The original A and B feed a second AND gate. The outputs of the two AND gates feed an OR gate whose output is X.
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Correct answer: (B) ((A'B').(AB))'
Explanation
The circuit computes X = A'B' + AB (XNOR). The official key marks option B.