Code A

$//2$x$4$ Decoder

module Decoder$24$vlog $($

output wire $W,$

output wire $x,$

output wire $Y,$

output wire $Z,$

input wire $S0,$

input wire S$1,$

;

assign $W=S1$&$S0$;

assign $x=S1$ & $S0$;

assign $Y=S1$&$S0$;

assign $Z=S1$ & $S0$;

endmodule

Code B

$//2\backslash$times $4$ Decoder

module Decoder$24$vlog $($

output wire $[3$:$0]W,$

output wire $[3$:$0]x,$

output wire $[3$:$0]Y,$

output wire $[3$:$0]Z,$

input wire $S0,$

input wire $S1,$

;

assign $W=S1$ & $S0$;

assign $x=S1$ & $S0$;

assign $Y=S1$&$S0$;

assign $Z=S1$ & $S0$;

endmodule