Question 25.SG.Q.10: What are the minimum number of 2-to-1 multiplexers required ......

Wiley Acing the Gate Electronics and Communication Engineering [1079457]

What are the minimum number of 2-to-1 multiplexers required to generate a two-input AND gate and a two-input EX-OR gate?

(a) 1 and 2 (b) 1 and 3

(c) 1 and 1 (d) 2 and 2

Step-by-Step

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One 2-to-1 multiplexer is required to implement AND gate. In the case of AND gate implementation, select line is tied to A input, $I_0$ input line is tied to logic 0 and $I_1$ input line is tied to logic 1. Similarly, EX-OR gate also requires one 2-to-1 multiplexer. Select line is connected to A. Input lines $I_0$ and $I_1$ , respectively, are connected to B and $\bar B$ .

Ans. (c)

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