可修改密码 起到锁的作用 按任意键启动 输入密码正确 正确指示灯亮 否则就是错误 ，错误指示灯亮 修改时要先输入正确后才能进入修改-Input the correct password can modify the code to play a lock Press any key to boot properly indicator light otherwise enter the correct error, the error light changes when the first to enter the change