GATE CS 2014 Set 3 — Question 18
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Digital Logic → Combinational Circuits → Multiplexers & Demultiplexers
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Question
Consider the following combinational function block involving four Boolean variables where are inputs and is the output.Which one of the following digital logic blocks is the most suitable for implementing this function?
f (x, y, a, b)
{
if (x is 1) y = a;
else y = b;
}
Correct answer
(C) Multiplexor
Solution
The given code describes a function where the output depends on the value of the control variable .
- If is 1, .
- If is 0 (else), .
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