用于模仿密码锁的工作过程。完成密码锁的核心控制功能。可实现数码输入、清除、退位、设置密码、错误提示、系统报警、解除报警、系统关闭等功能。-Used to imitate the work of the code lock process. Locks achieve the core control functions. Digital input can be achieved, clear, step down, set a password, error message, the system alarm, lift the alarm, turn off the functions of the system.