GREY to BINARY CODE CONVERTERS-(Dataflow)

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

entity G_B is

    Port ( G3,G2,G1,G0 : in  STD_LOGIC;

           B3,B2,B1,B0 : out  STD_LOGIC);

end G_B;

architecture Dataflow of G_B is

begin

B3<=G3;
B2<=G2 xor B3;
B1<=G1 xor B2;
B0<=G0 xor B1;

end  Dataflow;