2 总体设计方案的确定.................................................................1
2.1 电子密码锁设计要求........................................................1
2.2 总体设计方案选定............................................................2
3 系统硬件设计.............................................................................2
3.1 设计原理............................................................................2
3.2 单片机 STC89C52 简介....................................................3
3.4 七段数码管显示器部分.....................................................6
3.5 键盘设计............................................................................7
3.6 蜂鸣器模块........................................................................7
4 系统软件设计.............................................................................8
4.1 主程序模块........................................................................8
5 系统制作及调试.........................................................................9
5.1 焊接注意事项....................................................................9
5.2 硬件调试问题及解决方法................................................9
6 结论 ...........................................................................................10
参考文献 .......................................................................................11
附录 1：实物图 ............................................................................12
附录 2：元件清单 ........................................................................13
附录 3：电路原理图 ....................................................................14
