毕业论文
论文名称基于单片机的电子万年历
系统的设计
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指导教师
基于单片机的电子万年历系统的设计
专业：07通信工程姓名：指导教师：
摘要二十一世纪的今天，如今最具代表性的计时产品就是电子万年历，它是近代世界钟表业界的第三次革命。摆和摆轮游丝的发明是第一次革命摆，代表性的产品就是带有摆或摆轮游丝的机械钟或表。石英晶体振荡器的应用是第二次革命，发明了走时精度更高的石英电子钟表，使钟表的走时月差从分级缩小到秒级。单片机数码计时技术的应用是第三次革命就，使计时产品的走时日差从分级缩小到1/600万秒，更重要的是从原有传统指针计时的方式发展为人们日常更为熟悉的夜光数字显示方式，直观明了，并增加了全自动日期、星期、温度以及其他日常附属信息的显示功能，它更符合消费者的生活需求！因此，电子万年历的出现带来了钟表计时业界跨跃性的进步……
本设计是基于AT89S51系列的单片机进行的电子万年历设计，可以显示年月日时分秒及周信息，具有可调整日期和时间功能
具体实现功能：
（1）显示年月日时分秒及星期信息;
（2）具有可调整日期和时间功能;
（3）与即时时间同步;
关键词电子万年历，单片机，时钟
ABSTRACT
The 21st century today, now the most representative things is the electronic calendar, it is the modern world clock industry's third revolution. Pendulum and the invention of regulating is the first revolution placed, representative products with place or wheel tiffany-twisted mechanical clock or list. The application of quartz crystal oscillator is the second revolution, invented a higher precision when the quartz clocks, make the clock electronic’s time of months sent from minutes level reduced to seconds level. The application of SCM digital timekeeping is the third revolution would walk, make timing products from time difference reduced to 1 / graded six million seconds, the more important is the way the original traditional pointer timing for People's Daily more familiar with the development of luminous digital display mode, intuitive, and increases the automatic clear date, week, temperature and other daily affiliate information display function, it conforms to the consumer lifestyle needs! Therefore, electronic calendar brought along with the progress of KuaYueXing clocks timing industry...
This design is based on AT89S51 series of single chip design, can display electronic calendar date of arc and weeks when information, which can adjust the date and time functions
Specific functions:
(1)display date time and week
(2)provides adjustable date and time functions
(3)instant time synchronization
Key Words Electronic calendar clock microcontroller
目录
1.绪论 (1)
2.电子万年历系统的设计方案 (2)
2.1单片机芯片方案的选择与论证 (2)
2.2显示模块方案的选择与论证 (3)
2.3时钟方案的选择和论证 (4)
2.4电路设计最终方案 (4)
3．电子万年历各个模块功能和硬件设计介绍 (4)
3.1电路设计框图 (4)
3.2主控制电路介绍 (5)
3.3晶体振荡器电路介绍 (10)
3.4 74LS164结构及工作原理 (12)
3.5按键模块结构 (14)
3.6显示模块结构 (14)
3.7由各个模块互连成电子万年历的控制电路 (15)
4.系统软件的总体设计 (15)
4.1时间调整 (16)
5.仿真与原器件的焊接和调试 (18)
5.1.C语言编程 (18)
5.2.PROTUES硬件电路设计和仿真 (18)
5.3元器件的焊接与调试 (19)
6.结论 (21)
