3-BIT BINARY to EXCESS THREE CODE CONVERTER (Dataflow)

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

entity Eccess_three is

    Port ( B2,B1,B0 : in  STD_LOGIC;

           E3,E2,E1,E0 : out  STD_LOGIC);

end Eccess_three;

architecture Dataflow of Eccess_three is

begin

E3<=B2 and (B1 or B0);
E2<=B2 xor (B1 or B0);
E1<=B1 xnor B0;
E0<=not B0;

end  Dataflow;