library ieee;
use ieee.std_logic_1164.all;

entity Decodeur is
port(
Entree: in std_logic_vector(1 downto 0);
Sortie : out std_logic_vector(3 downto 0));

end Decodeur;

architecture ConcSelect of Decodeur is

--begin
--with Entree select 
--Sortie <= "0001" when "00",
--"0010" when "01",
-- "0100" when "10",
--"1000" when "11",
--"0000" when others;

begin process(all)
begin case Entree is
when "00" => Sortie <= "0001";
when "01" => Sortie <= "0010";
when "10" => Sortie <= "0100";
when "11" => Sortie <= "1000";
when others => Sortie <= "0000";
end case;
end process;
end ConcSelect;