基于单片机的多功能数字时钟
论文编号:DZXX232 论文字数:11144,页数:35摘 要
随着生活节奏变得越来越快，人们的时间观也日益增强，多功能数字钟的作用也就越来越明显。而随着单片机的发展越来越快，其在小型系统开发上的优势也越来越被人们认识到，所以用本次设计的多功能数字钟以AT89C51为核心，加以温度传感器，液晶显示器等元件，达到制作数字钟的目的。该数字钟能够准确显示时间，自动报时，闹钟设置，环境温度测量等功能，与传统的机械数字钟相比，结合相应的元件，用单片机设计制作的数字时钟，就有更高的准确率和使用寿命，相信以后在日常生活的应用也将会越来越广泛。
关键词：单片机，温度传感器，时钟
ABSTRACT
As modern society increasingly rapid pace of working life, time for people to have more and more important in people's daily life and various social activities, can not do without time, time and people's daily life. Multi-function digital clock on the provision of a convenient, not only can accurately display the time, there is alarm settings, temperature measurement, etc. Other features, compared with the mechanical clock is more accurate and intuitive, is used digital circuit technology, the minute and second timing device, because no mechanical device, and therefore have a longer life, it has been widely used.
SCM is a set of CPU, RAM, ROM, I / O interfaces and interrupt system part in one of the devices, only external power supply and the crystal can be realized on digital information processing and control. SCM combined with multi-function digital clock, for the time display, temperature measurement is not only easy to control, simple configuration and flexibility of big advantages, but also greatly enhance the value of the technical indicators are detected, which can greatly enhance the quality of the product and quantity. Therefore, the MCU in modern life and more and more widely applied in industry.
Key words：Single-chip Microcomputer, Temperature Sensor, Clock
目 录
第一章 引言.1
1.1 系统开发背景及现状1
1.2 系统开发的目的1
1.3 研究的基本的内容与拟解决的问题2
第二章 硬件描述.3
2.1 单片机概述 .3
2.1.1 单片机的历史与发展概况.3
2.2 MCS-51系列单片机简介.3
2.3具体硬件介绍4
2.3.1 AT89C51介绍4
2.3.2 传感器D18B2介绍.6
2.3.3 LCD1602液晶显示介绍7
2.4 protel简介.9
第三章 硬件及电路设计.11
3.1 系统原理框图11
3.2 各模块电路设计11
3.2.1 LCD1602显示模块设计12
3.2.2 DS18B20温度传感器模块12
3.2.3 键盘输入模块设计.13
3.2.4 蜂鸣器模块设计.14
3.2.5 DS1302时钟电路模块.14
第四章 软件设计.15
4.1 系统流程框图15
4.2 各部分功能软件设计17
系统测试.19
5.1 系统硬件调试19
5.2 系统软件调试19
致谢.20
参考文献.21
附录一 部分代码.22
附录二 实物图.31
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