GATE Bits 49 50 Combinational Circuits || Lesson 111.4 || Digital Electronics || Learning Monkey ||

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Electronics

Here we will try to understand GATE Bits 49 50 Combinational Circuits.

Consider the circuit shown below. The output of a 2:1 Mux is given by the function (ac’ + bc).

Which of the following is true?
(A) f = x1’+ x1x
(B) f = x1’x2 + x1x2′
(C) f = x1x2 + x1’x2′
(D) f = x1 + x2′

GATE 2001

Consider a multiplexer with X and Y as data inputs and Z as control input. Z = 0 selects input X, and Z = 1 selects input Y. What are the connections required to realize the 2-variable Boolean function f = T + R, without using any additional hardware?
(A) R to X, 1 to Y, T to Z
(B) T to X, R to Y, T to Z
(C) T to X, R to Y, 0 to Z
(D) R to X, 0 to Y, T to Z

GATE 2004

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