Grafica de compuerta XNOR

 -- Simple XNOR gate design

library IEEE;

use IEEE.std_logic_1164.all;

entity xnor_gate is

port(

  a: in std_logic;

  b: in std_logic;

  q: out std_logic);

end xnor_gate;

architecture rtl of xnor_gate is

begin

  process(a, b) is

  begin

    q <= a xnor b;

  end process;

end rtl;