基于AT89S51的密码锁设计

针对传统机械锁结构简单、安全性能低的特点,采用AT89S51单片机作为主控芯片,结合外围的按键电路、显示电路、报警电路、存储电路以及开锁电路,设计出一款可以多次更改密码,并且具有声音报警功能的电子密码锁。实践证明,该密码锁具有设计方法合理,简单易行,成本低,使用安全等特点。

Design of Cipher Lock Based on AT89S51

Combining the AT89S51main control chip with the pressed key circuit, display circuit, alarm circuit, storage circuit and unlock circuit, an electronic cipher lock which can change the passwords and sound alarm was designed to overcome the simple structure and unsafe of the traditional mechanical lock. Experiments show that the cipher lock is characterized by its reasonable designing methods, simple operation, low cost and safety.