毕业论文：基于51单片机电子万年历论文.doc

摘 要： 电子万年历是一种非常广泛日常计时工具，对现代社会越来越流行。它可以对年、月、日、周日、时、分、秒进行计时，还具有闰年补偿等多种功能，而且DS1302的使用寿命长，误差小。对于数字电子万年历采用直观的数字显示，可以同时显示年、月、日、周日、时、分、秒和温度等信息，还具有时间校准功能AT89C52单片机，LED显示电路，以及调时按键电路等组成。在单片机的选择上本人使用了AT89C52单片机，该单片机适合于许多较为复杂控制应用场合。显示器使用2片7SEG-MPX8-CA和一片7SEG-MPX4-CA。7SEG-MPX8-CA是一种八个阳二极管显示器7SEG-MPX4-CA是一种四个阳二极管显示器74HC164 是 8 位边沿触发式移位寄存器，串行输入数据，然后并行输出。Proteus软件中嵌入单片机内进行仿真。最后总在老师同学的帮助以及自己的努力下完成了此次电子万年历的设计。 关键词： 时钟电钟；DS1302；DS18B20；动态扫描；单片机 Electronic: calendar is a very extensive daily timing tool for modern society is more and more popular. It can be to year, month, day, Sunday, when, minutes and seconds for the time, also has a leap year compensation and other functions, and the DS1302 long service life and small error. For digital electronic calendar using intuitive digital display, can also shows that year, month, day, Sunday, when, minutes and seconds and temperature, information, but also has time calibration etc. Function. This circuit AT89S52 SCM as the core, power consumption is small, can be in 3 V of low-pressure work, voltage can choose 3 ~ 5 V voltage power supply. This design is based on the single chip microcomputer 51 series of electronic calendar design, can display date and weeks determined when information, which can adjust the date and time of the function. In the design of the single chip microcomputer and the theory foundation and peripheral expansion compared to comprehensive knowledge. In the hardware and software design, no good basic knowledge and practical experience is very limited, every function implementation need that kind of hardware, and the program this how to write, how to realize the algorithm, not a foundation will not be very good implementation. In the programming process found on existing knowledge to finish writing task difficult, the teachers and students of help to finish the program part of the code. The design process of the calendar in the hardware and software design of synchronization. Mainly by AT89C52 single chip microcompute