adder4

entity Adder4 is
    port ( A   : in Std_Logic_Vector(3 downto 0) ;
           B   : in Std_Logic_Vector(3 downto 0) ;
           RESULT : out Std_Logic_Vector(3 downto 0) );
end Adder4;

architecture DataFlow OF Adder4 is
begin
   RESULT <= std_logic_vector( unsigned(A) + unsigned(B) );
end DataFlow;