基于51单片机的多功能数字时钟设计

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1、山东电力高等专科学校毕业设计（论文）山东电力高等专科学校毕业设计多功能电子时钟设计姓名：贾倩倩院系：计量工程系专业：电子测量技术与仪器学号:0909010242指导老师：赵保华提交时间：2011.14山东电力高等专科学校毕业设计（论文）目录摘要··························································3一工作原理······················································4二硬件电路设计·······

2、·······································42.1主控制器AT89C51····································42.2内部时钟电路·········································62.3手动复位电路·········································6三温度测量及报警部分·······································73.1温度测量模块···

3、······································73.2DS18B20的主要特性··································83.3DS18B20的外形和内部结构··························83.4高速暂存存储器····································103.54山东电力高等专科学校毕业设计（论文）DS18B20的应用电路·································11四键盘、

4、显示部分···········································124.1键盘模块·············································124.2显示模块·············································134.31602LCD的指令说明及时序···························15五实时时钟部分············································

5、··175.1DS1302简介·······································175.2DS1302的引脚及内部寄存器··························185.3DS1302的控制字节·································195.4数据输入输出(I/O)···································195.5DS1302与微控制器的接口软件及功能应用举例·······19六软件设计·············

6、····································19七调试与分析················································204山东电力高等专科学校毕业设计（论文）总结和体会····················································21致谢·····················································22参考文献······················

7、······························23附录1·····················································23附录2·····················································24摘要多功能数字钟的系统采用AT89C51单片机作为控制系统的核心，模型采用单片机作为主控制器，利用DSl302时钟芯片计算当前的秒、分、时、日、月、年。通过1602液晶屏友好的人机界面将结果完美的呈现给用户。为具有

8、更高的实用价值，特采用DS18B20来显示当前温度，并伴有温度报警功能。利用键盘模块对预设的温度报警上下限进行设置。由于该系统具有时间显示、温度测量等完整功能，有很高的利用价值。4山东电力高等专科学校毕业设计（论文）[关键词]温度测量　单片机　c语言　实时时钟4山东电力高等专科学校毕业设计（论文）基于单片机实现多功能数字钟的系统设计一工作原理　　数字钟是采用数字电路实现对时、分、秒数字显示的计时装置，广泛用于个人家庭、车站、码