Schaltungstechnik

548 8 Analog/Digitale Schnittstelle
library IEEE;
use IEEE.std_logic_1164.all;
entity simex1 is
generic (tpd: time:= 1ns);
port (a: in STD_LOGIC;
b: in STD_LOGIC;
c: in STD_LOGIC;
d: in STD_LOGIC;
X: out STD_LOGIC);
end simex1;
architecture simex1_arch of simex1 is
signal s1, s2, s3, s4, s5: STD_LOGIC;
begin
X