说明：  设计八位密码锁 提示输入密码是否正确并予以直观显示 可以修改密码 可以重置密码 输入密码错误三次锁定屏幕并报警
(Design eight bit cipher lock Indicate whether the input password is correct and to be displayed intuitively You can modify the password You can reset the password Input password error three lock screen and alarm)