Chapter 3, Problem 28E

Explanation of Solution

Implementation of 4-to-1 mux:

• Given the following,

$\begin{array}{l}\text{Number of 2-to-1 multipexers = 2}\\ \text{Number of inputs = 4}\\ \text{Number of outputs = 1}\end{array}$

• A 4-to-1 multiplexer implemented using 2-t-1 mux is as follows,

Explanation of Solution

Truth table:

• The truth table for the implementation of 4-to-1 multiplexer using 2-to-1 multiplexer  is as follows,

Control signals			Intermediate outputs		Output of 4-to-1 mux