Question 8427 – Computer-Networks
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The following circuit implements a two-input AND gate using two 2-1 multiplexers. What are the values of X1, X2, X3 ?
Correct Answer: A
Question 8 Explanation:
F = (bX1′ + aX1)X3 + X2X3′
If we put
X1 = b
X2 = 0
X3 = a
Then we get,
F = ab
If we put
X1 = b
X2 = 0
X3 = a
Then we get,
F = ab
X1 = b, X2 = 0, X3 = a
X1 = b, X2 = 1, X3 = b
X1 = a, X2 = b, X3 = 1
X1 = a, X2 = 0, X3 = b
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