// File name	: mux
// OUT = A if select==1; OUT=B if select==0.
module mux(select,A,B,OUT) ;
// multiplexer
parameter	LENGTH=5; //length of the multiplexer
input			select;
input [LENGTH:1]	A,B;
output [LENGTH:1]	OUT; //DISPLAY = {G,F,E,D,C,B,A} of a 7-segment display;

assign 			OUT = (select)?A:B;
endmodule