word完美格式单片机的电子密码锁目录第一章绪论..............................................................................................21.1电子密码锁简介................................................................................21.2电子密码锁设计的背景及意义.............................................................................................3第2章总体设计........................................................................................................................32.1设计分析................................................................................................................................32.2系统结构................................................................................................................................4第3章硬件电路设计....................................................................................................................53.1单片机最小系统设计............................................................................................................53.1.1时钟电路.............................................................................................................................53.1.2复位电路..........................................................................................................................63.1.3最小系统..........................................................................................................................63.2矩阵键盘设计....................................................................................................................7精心整理学习帮手word完美格式3.3LCD显示模块设计.............................................................................................................83.4开锁机构............................................................................................................................93.5报警机构............................................................................................................................103.6硬件综合设计....................................................................................................................10第4章软件设计.......................................................................................................................114.1软件总体设计.....................................................................................................................114.2键盘扫描子程序................................................................................................................124.3定时器中断子程序............................................................................................................144.4密码输入子程序....................................