目 录1 引言.............................................................................................................................................12 系统设计分析............................................................................................................................22.1 总体设计框图................................................................................................................22.2 硬件电路设计分析.......................................................................................................32.2.1 时钟电路设计.....................................................................................................32.2.2 复位电路设计.....................................................................................................42.2.3 矩阵键盘设计.....................................................................................................52.2.4 报警控制电路.....................................................................................................62.2.5 液晶显示电路.....................................................................................................72.3 系统软件设计................................................................................................................82.3.2 初始化及按盘识别程序...................................................................................92.3.3 开锁程序..............................................................................................................92.3.4 修改密码程序...................................................................................................102.3.5 LCD 显示程序..................................................................................................112.4 仿真测试结果..............................................................................................................123 总结......................................................................................................
