2-input multiplexer (4-bit wide) X82780

Design a 2-input multiplexer in which the inputs are 4-bit wide. The selection signal is called sel, whereas the two inputs are called in0 and in1. The output will be in0 when sel=0 and in1 when sel=1.

Specification

module mux4(in0, in1, sel, out);
    input [3:0] in0, in1;
    input sel;
    output [3:0] out;

Input

• in0 and in1 are the two 4-bit inputs.

• sel is the selector.

Output

• out is the 4-bit output.