4-input multiplexer

Design a 4-input multiplexer. It has four input signals (in0-in3) and two selection signals (sel[1:0]). The output must be assigned the input signal corresponding to the selection.

Specification

module mux4(in0, in1, in2, in3, sel, out);
    input in0, in1, in2, in3;
    input [1:0] sel;
    output out;

Hint

Use 2-input multiplexers.

Input

in0, in1, in2 and in3 are the inputs of the multiplexer.
sel encodes the two selection signals.

Output

out is the output of the multiplexer.

Problem information

Author: Jordi Cortadella

Generation: 2026-07-14T06:43:07.752Z