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单片机制作数字历.doc
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电子设计大赛
数字万年历
摘要
在当代繁忙的工作与生活中,时间与我们每一个人都有非常亲密的关
系,每个人都收到时间的影响,为了更好的利用我们自己的时间,我们必
须对时间有一个度量,因此产生了钟表。随着社会、科技的发展,人类得
知时间,从观太阳、摆钟到现在电子钟,不断研究、创新。为了在观测时
间的同时能够了解其他与人类密切相关的信息,比如温度、星期、日期等
电子万年历诞生了,它集时间、日期、星期和温度于一身,具有读取方便
显示直观、功能多样、电路简洁等诸多优点,符合电子仪器仪表的发展趋
势,具有广阔的市场前景。随着人们生活水平的提高和生活节奏的加快,
对时间的要求越来越高,精准数字计时的消费需求也是越来越多。
该电子万年历主要采用单片机作为主控核心,由时
钟芯片提供时钟、动态扫描显示屏显示,单片机具有功耗小
片内全都采用:能以的超低电压工作,同时也与
系列单片机完全兼容,该芯片内部存储器为存储空间,
同时具有的功能,且具有在线编程可擦除技术,当在对电路进行调
试时,由于程序的错误修改或程序的新增功能需要烧入程序时,不需要对
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芯片进行多次插拔,所以不会对芯片造成损坏。时钟芯片是美国
公司推出的具有涓流电流充电功能的低功耗实时时钟芯片,它可
以对年、月、日等进行计时,还有闰年补偿等功能,而且使用寿命长,误
差小,数字显示是采用的液晶显示,可以同时显示各种需要的信息。
此外,该电子万年历还具有时间校准等功能。
【关键字】 时钟电路 时钟芯片 液晶显示 单片机
Abstract
In the contemporary busy work and the life, the time has the very intimate relations
with our each people, each people receive the time the influence, for better uses our time,
we must have a measure to the time, therefore has produced the clock and watch. Along
with social, the technical development, the humanity knows the time, from the view sun,
the pendulum clock to the present electron clock, studies, the innovation unceasingly. For
d u r i n g h o u r o f o b s e r v a t i o n ' s c a n u n d e r s t a n d t h a t o t h e r w i t h t h e h u m a n c l o s e r e l a t e d
information, for instance the temperature, the week, the date and so on, the electronic ten
thousand calendars were born, its collection time, the date, the week and the temperature
in a body, have the read to be convenient, the demonstration is direct-viewing, the function
i s d i v e r s e , e l e c t r i c c i r c u i t s u c c i n c t a n d s o o n m a n y m e r i t s , c o n f o r m s t o t h e e l e c t r o n i c
i n s t r u m e n t a t i o n m e a s u r i n g a p p l i a n c e ' s t r e n d o f d e v e l o p m e n t , h a s t h e b r o a d m a r k e t
p r o s p e c t . A l o n g w i t h t h e p e o p l e l i v i n g s t a n d a r d ' s e n h a n c e m e n t a n d r h y t h m o f l i f e ' s
q ui c k en i n g, is g e t t in g hi g h e r an d h i gh e r t o t h e t i m e r e q u e st , t h e a c cu r at e di g i t a l t i m e' s
consumer demand is also more and more
This electron ten thousand calendars mainly use at89S52 monolithic integrated circuit
to t ak e t he ma st er co nt rol c or e, p ro vi de s the c loc k, t h e LE D d yn am ic s ca nn in g di sp la y
monitor by the DS1302 clock chip to demonstrate, at89S52 monolithic integrated circuit
has the power loss to be small, internal ROM all uses FlashROM: Can by the 3V ultra low
v o l t a g e w o r k , a l s o c o m p l e t e l y b e s i m u l t a n e o u s l y c o m p a t i b l e w i t h t h e M C S - 5 1 s e r i e s
monolithic integrated circuit, this chip interior memory is 8KB the ROM storage space,
simultaneously has the 89C51 function, and has the online programming to be possible to
cl e an t he t ec hn olo gy, w he n c ar ri es o n th e d eb ug gi ng to t he e le c tr ic c ir cu it , be c au se t h e
procedure wrong revisio n o r t h e procedure addition func t i on al ne ed burns into time th e
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![](https://csdnimg.cn/release/download_crawler_static/27263464/bg3.jpg)
procedure, does not need to carry on to the chip inserts many times pulls out, will therefore
n o t c r e a t e t h e d a m a g e t o t h e c h i p . T h e D S 1 3 0 2 c l o c k c h i p i s A m e r i c a n D A L L A S
Corporation promotes has the brook class electric current charge function low power loss
real-time clock chip, it may to the year, the month, the date and so on carry on the time,
but also has functions and so on leap year compensation, moreover the service life is long,
the error is small, the digital demonstration is LCD which uses liquid crystal display, may
simultaneously demonstrate each kind of need the information. In addition, this electronic
ten thousand calendars also have functions and so on time calibration.
key words: Clock circuit clock chip DS1302 LCD liquid crystal display monolithic
integrated circuit AT89S52
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![](https://csdnimg.cn/release/download_crawler_static/27263464/bg4.jpg)
目 录
摘 要
第一章 绪论
选题背景
系统目标
设计意义
第二章 设计要求与方案论证
设计要求
系统基本方案选择和论证
电路设计最终方案决定
第三章 系统的硬件设计与实现
系统硬件概述
主要单元电路的设计
第四章 系统的软件实现
第五章 设计总结与心得体会
致谢
附录:
源代码
参考文献
电路原理图
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