本次设计是基ADUC848开发板，用keil 4软件仿真。本系统由单片机系统、矩阵键盘、数码管、LED显示和报警系统组成。系统能完成开锁、修改用户密码基本的密码锁的功能。除上述基本的密码锁功能外，还具有超时锁定，密码输入次数大于3报警，显示和设置北京时间等功能。-The design is based the ADUC848 development board, keil 4 software simulation. The system consists of single-chip systems, matrix keyboard, digital tube, LED display and alarm system. The system can unlock, modify the user password password lock function. In addition to the basic password lock function, also has a lock timeout, password input is greater than 3 times the alarm display functions and settings GMT.