andari.vhd

出租车计费器,VHDL实现

LIBRARY  IEEE;
USE  IEEE.STD_LOGIC_1164.ALL;
ENTITY  andari  IS
    PORT(
         abin:IN STD_LOGIC;
          din:IN STD_LOGIC_VECTOR(7 DOWNTO 0);
         dout:OUT STD_LOGIC_VECTOR(7 DOWNTO 0));
END  andari;

ARCHITECTURE  execute  OF  andari  IS
BEGIN
PROCESS(abin,din)
      BEGIN
      FOR i IN 0 TO 7 LOOP
           dout(i)<=din(i) AND abin;
      END  LOOP;
END PROCESS;
END execute;