4-input multiplexer X45339

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.