消抖电路.txt

来自「实现了16*16点阵上的三色显示的弹球游戏」· 文本 代码 · 共 20 行

library ieee;
use ieee.std_logic_1164.all;
entity dou is
 port( din: std_logic;
   clk: std_logic;
   dout:std_lgoic);
end dou;
architecture rt1 of dou is
signal x,y:std_logic;
begin
 process(clk)
 begin
  if clk'event and clk='1' then
   x<=din;
   y<=x;
  end if;
  dout<=x and( not y);
 end process;
end rt1;