小小游戏机:利用8255芯片完成，8255芯片接有LED灯和按键。

1、LED灯初始状态为循环点亮；

2、按键和灯是一一对应的状态，如果在灯n（n=1--8）点亮的时候，按键被按下，则游戏成功，所有灯灭。如果按键n(n=1--8)按下时，相应的灯n没有亮，而是其他灯亮， 则游戏失败，所有灯继续处于循环点亮状态。-Little Rides: the completion of the 8255 chip, 8255 chip connected with LED lights and buttons.

LED lights initial state of the light cycle

2 buttons and lights are one-to-one correspondence status, n (n = 1- 8) If the light is lit when the button is pressed, the game is successful, all the lights off. If the button n (n = 1- 8) Press the corresponding light n is not lit, but the other lights, the game fails, all the lights in the light cycle status.