编号（学号）：本科学生毕业设计题目：______基于单片机的智能定时打铃系统__________DesignofIntelligenttimingbellsystembasedonMCU学院名称：__________物理与电子信息学院_______________专业名称：_______电子信息工程专业______________年级：__________2009级9班______________________学生姓名：____________钟德超___________________学号：_________200909340945_____________________指导教师：__唐正明____职称/学历：___讲师/硕士___教务处制200909340945目录摘要................................................................3ABSTRACT............................................................4第1章绪论.........................................................51.1选题背景及研究意义............................................51.2课题设计的主要内容............................................6第2章系统总体设计.................................................72.1设计要求......................................................72.2功能特点......................................................7第3章方案的论证...................................................93.1主控芯片的选择................................................93.2显示模块......................................................93.3时钟模块的选择...............................................10第4章系统硬件设计................................................114.1硬件模介绍...................................................114.1.1单片机技术简介............................................114.1.2系统主要芯片和元器件的介绍及应用..........................114.1.3DS1302时钟模块介绍.....................................144.1.4LCD液晶显示模块介绍......................................164.1.5蜂鸣器模块...............................................184.2单片机最小系统的设计.........................................194.2.1时钟脉冲电路.............................................194.2.2复位电路..................................................204.3硬件设计总图.................................................21第5章软件程序设计................................................225.1软件程序整体设计.............................................225.1.1程序流程图................................................225.2程序模块设计.................................................235.2.1DS1302时钟显示与调节程序设计............................235.2.2LCD1602显示程序设计......................................245.2.3蜂鸣器程序设计............................................25第6章系统测试及分析..............................................266.1系统测试.....................................................266.2各模块初始化现象.............................................266.2.1时钟芯片模块.............................................261参考文献...........................................................28附录A.............................................................301.系统整体电路图...................................................302.系统整体PCB图.................................................31附录B作品实物图.................................................32附录C程序.......................................................33致谢............................................................42基于单片机的智能定时打铃系统钟德超物理与电子信息学院电子信息工程专业2009级指导教师：唐正明摘要:单片机自20世纪70年代问世以来，以其极高的性能价格比，受到人们的重视和关注，应用很广、发展很...
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