多功能单片机数字时钟实验总结.docxVIP

多功能单片机数字时钟实验总结 　　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:　　指导老师：赵保华　　提交时间：　　目录　　摘要··························································3　　一工作原理······················································4　　二硬件电路设计··············································4　　主控制器AT89C51····································4　　内部时钟电路·········································6　　手动复位电路·········································6　　三温度测量及报警部分·······································7　　温度测量模块·········································7　　DS18B20的主要特性··································8　　DS18B20的外形和内部结构··························8　　高速暂存存储器····································10　　DS18B20的应用电路·································11　　四键盘、显示部分···········································12　　键盘模块·············································12　　显示模块·············································13　　1602LCD的指令说明及时序···························15　　五实时时钟部分··············································17　　DS1302简介·······································17　　DS1302的引脚及内部寄存器··························18　　DS1302的控制字节·································19　　数据输入输出(I/O)···································19　　DS1302与微控制器的接口软件及功能应用举例·······19　　六软件设计·················································19　　七调试与分析················································20　　总结和体会····················································21　　致谢·····················································22参考文献····················································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。　　[关键词]温度测量单片机c语言实时时钟　　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、码头、办公室等公共场所，已成为人们日常生活中不可少的必需品，由于数字集