目录
摘 要..................................................................................................................................I
Abstract.............................................................................................................................II
1 绪论 ...............................................................................................................................1
1.1 电子密码锁简介 ....................................................................................................1
1.2 电子密码锁的发展趋势 ........................................................................................1
1.3 本设计所要实现的目标 ........................................................................................2
1.4 设计方案简介 ........................................................................................................2
2 主要元器件 ...................................................................................................................3
2.1 主控芯片 AT89S51................................................................................................3
2.2 存储芯片 AT24C02 ...............................................................................................6
2.3 LCD16022 显示器 ..................................................................................................7
2.4 晶体振荡器 ............................................................................................................8
3 硬件系统设计 .............................................................................................................10
3.1 设计原理 ..............................................................................................................10
3.2 电路总体构成 ......................................................................................................10
3.3 电源输入电路 ......................................................................................................11
3.4 键盘输入电路 ......................................................................................................12
3.5 密码存储电路 ......................................................................................................12
3.6 复位电路 ..............................................................................................................13
3.7 晶振电路 ..............................................................................................................14
3.8 显示电路 ..............................................................................................................14
3.9 报警电路 ..............................................................................................................15
3.10 开锁电路 ............................................................................................................15
5.3 Proteus 仿真 ..........................................................................................................22
结论 .................................................................................................................................24
致谢 .................................................................................................................................25
参考文献 .........................................................................................................................26
附录 A：总程序 .............................................................................................................27
附录 B：总电路图 .........................................................................................................40
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目录正文 宋体 小四
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