deco10.vhd

包含了电子时钟的主要功能,输入CLK为1KHZ,输出为动态扫描8段CLD显示.有闹铃,正点报时,时间调整.调整时能够闪烁显示.本时钟为24小时制.课程设计优秀通过.运行平台:MAX+PLUS2.

library ieee;
use ieee.std_logic_1164.all;

entity deco10 is 
port(sel :in std_logic_vector(3 downto 0);
disable:in std_logic;
q:out std_logic_vector(7 downto 0));
end deco10;

architecture a of deco10 is
signal tq:std_logic_vector(7 downto 0);
begin
with sel select
tq<="00111111" when "0000",
    "00000110" when "0001",
    "01011011" when "0010",
    "01001111" when "0011",
    "01100110" when "0100",
    "01101101" when "0101",
    "01111101" when "0110",
    "00100111" when "0111",
    "01111111" when "1000",
    "01101111" when "1001",
    "00000000" when others;
q<=tq when disable='0' else "00000000";
end a;