2 to 4 Decoder

2 to 4 Decoder (Dataflow Modeling):

module decoder2to4(

    input [1:0] a,

    output [3:0] d

    );

assign d[0]=((~a[1])&(~a[0]));

assign d[1]=((~a[1])&a[0]);

assign d[2]=(a[1]&(~a[0]));

assign d[3]=(a[1]&a[2]);

endmodule