文档介绍：本科生毕业论文
题目基于单片机的数字时钟的设计
学院理学院
专业班级 10级电科四班
学生姓名
指导教师
撰写日期2014年5月15日
基于单片机的数字时钟毕业设计
摘要
多功能数字钟的应用非常普遍,由单片机作为数字钟的核心控制器,通过它的时钟信号进行实现计时功能,将其时间数据经单片机输出,利用显示器显示出来。通过键盘可以进行校时、定时等功能。输出设备显示器可以用LED显示技术来显示技术。
本系统利用单片机实现具有计时、校时等功能的数字时钟,是以单片机AT89C51为核心元件,以蜂鸣器实现闹钟,同时采用LED动态显示“时”,“分”,“秒”的现代计时装置。另外具有校时功能,秒表功能,和定时器功能,利用单片机实现的数字时钟具有编程灵活,便于功能的扩充等优点。
简要介绍了LED显示的发展状况和其所特有的优势,简述了该系统中一些重要芯片的基本工作原理,着重论述了硬件线路各个模块的设计思想。LED显示与单片机的接口采用动态显示技术,利用了时钟芯片的系统自带电池功能来实现断电时保存一些重要数据,以便来电时正确显示信息的功能。
模块化的设计和调试方法在整个课题研究过程中至关重要,事实上在任何设计中也同样关键和有效。
关键词:数字钟系统; 单片机; LED显示;蜂鸣器
Graduation design based on SCM digital clock
Yang yabo
Abstract
Multi-function digital clock is mon, by single chip puter as the core of the digital clock controller, through its function of timing clock signal, the time data by the MCU output, using the monitor display. Through the keyboard to school, timing, etc. Output devices display can use the LED display technology to display technology.
This system USES single chip puter to realize digital clock with timing, when the school and other functions, is based on single chip puter AT89C51 as the core element, with a buzzer alarm clock, and USES the LED dynamic display "when", "points", "second" modern timing devices. Also has the function of the school when, stopwatch functions, and timer function, using the single chip puter implementation of digital clock with flexible programming, function expansion conveviently.
This paper briefly introduces the development of LED display and its peculiar advantage, this paper expounds some important chip in this system the basic working principle, mainly discusses the hardware circuit design of each module. LED display and single chip puter interface dynamic display technology, using the function of clock chip es with battery power to implement save some important data, in order to call the right shows the function of information.
Modular design and debug method is of vital importance in the whole research process, in