1-2 DeMux 解多工器 (Gate Level)

1-2 DeMux 解多工器 (Gate Level)

//------------------------------------
// 1-2 DeMux (Gate Level)
// Filename: DeMux_1x2.v
//------------------------------------
module DeMux_1x2(D,S,Y);
input D,S;
output [1:0]Y;

wire s_bar;
not u1(s_bar,S);

and U2(Y[0],s_bar,D);
and U3(Y[1],S,D);

endmodule

//==================================

// 時間單位 100ns, 時間精確度100 ps

`timescale 100ns/100ps 

module TB;

/*

module DeMux_1x2(D,S,Y);

input D,S;

output [1:0]Y;

*/

reg D,S;

wire [1:0] Y;

integer i;

 

DeMux_1x2 UUT(D,S,Y);

 

initial begin  

   for ( i=0;i<=3;i=i+1) 

        begin

           {D,S}  = i;

            #1;

        end

end

endmodule