Implementation of 4-to-1 multiplexer, Computer Engineering

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Implement the Y(A, B, C) = ∑(2,3,5,6) function using 4-to-1 multiplexer.

Ans. Y(A,B,C)=∑(2,3,5,6)
Here we take B,C as the select bits also A as input. To select the input we can write.
Y = A'BC'+A'BC+AB'C+ABC'
= 0 if B=0, C=0
= A if B=0, C=1
= 1 if B=1, C=0
= A' if B=1, C=1
The equivalent implementation is demonstrated in the figure. As

310_Implementation of 4-to-1 multiplexer.png

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