毕业设计（论文）学生姓名：赵军成学号：21专业：应用电子技术系部：电子工程学院设计(论文)题目：用24C04与1602LCD设计电子密码锁课程设计指导教师:陈爱文年月日目录..01引言..............................................................22设计任务和要求...................................................32.1系统总结构设计图...................................................................................................................................................32.2单元电路设计与参数计算.......................................................................................................................................42.3各模块的功能...........................................................................................................................................................42.3.2矩阵键盘键值读取...........................................................................................................................................52.3.31602液晶显示模块...........................................................................................................................................52.4.延时模块...................................................................................................................................................................62.4.2密码设置模块....................................................................................................................................................62.4.3密码比较模块...................................................................................................................................................72.4.4改密处理............................................................................................................................................................72.5单片机及其外围电路...............................................................................................................................................82.6时钟电路...................................................................................................................................................................92.7矩阵键盘电路的设计.............................................................................................................................................102.8操作面板.................................................................................................................................................................112.9液晶显示电路.........................................................................................................................................................112.9.2液晶显示子程序.............................................................................................................................................132.10系统软件设计.......................................................................................................................................................142.11系统主程序...........................................................................................................................................................142.12初始化及按键识别...............................................................................................................................................152.13源程序如下所示：.......
