说明：  密码锁控制器 设计一个密码锁，平时处于等待状态。管理员可以设置或更该密码。如果不预置密码， 密码缺省为“6666”。用户如果需要开锁，按相应的按键进入输入密码状态，输入4位 密码，按下确定键后，若密码正确，锁打开，若密码错误，将提示密码错误，要求重 新输入，三次输入都错误，将发出报警信号。报警后，只有管理员作相应的处理才能 停止报警。用户输入密码时，若输入错误，在按下确定键之前，可以通过按取消键重 新输入。正确开锁后，用户处理完毕后，按下确定键，系统回到等待状态。系统操作 过程中，只要密码锁没有打开，如果1 分钟没有对系统操作，系统回到等待状态。
(Password lock controller Designed a password lock, waiting in a normal status. Administrators can set up or the password. If you do not preset password, Default password is "6666." If you need to unlock the user, according to the corresponding status button to enter a password, type 4 Password, press OK, if the password is correct, open the lock, if the wrong password, wrong password will be prompted to request re- New inputs, the importation of all three errors, will issue a warning signal. Alarm, only the administrator can deal with accordingly Stop the alarm. Users to enter a password, if the input error, identified in the press before the key can be canceled by pressing the key re- New input. Unlock right, the user after the treatment, press OK, the system back to waiting status. System Operator As long as there is no open locks, 1 minutes, if not on the system operation, system status back to wait.)