--description for inverter with enable
library ieee;
use ieee.std_logic_1164.all;
entity ken1 is
        port(A,B  : in std_logic;
             C    : out std_logic);
end ken1;

architecture ken1_arc of ken1 is
begin
    process(A,B)
    begin
          if(B='1')then
              C<= not A;
          else
              C<= '1';
          end if;
    end process;
end ken1_arc;