采用单片机AT89S5l与低功耗CMOS型E2PROM AT24C02作为主控器件与数据存储器单元，设计一款可更改密码，具有报警、实时监控和远程管理功能的电子密码锁。-E2PROM AT24C02 microcontroller AT89S5l with low power CMOS as a master device and data memory unit, design a password can be changed with alarm, real-time monitoring and remote management features electronic locks.