基于单片机的数字电子钟设计-毕业设计论文

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1、基于单片机的数字电子钟设计基于单片机的数字电子钟设计摘要：本设计以51单片机为核心，附加了必要的外围电路，构成了一个简单的数字电子钟，整体由5V的电源供电。在硬件方面，除了51单片机芯片以外，我们还主要用到了时钟芯片DS1302、温度采集芯片DS18B20、和型号为1602的液晶显示器。在这些硬件的基础上，我们通过编写配套的C语言程序，实现了对年、月、日、时、分、秒、星期以及温度在液晶屏上的显示，此外还实现了整点报时和闹钟的功能。日期、时间和温度的显示都是通过相应的时钟芯片DS1302和温度采集芯片DS18B20与单片机的配合工作将数据传送到液晶显示器上

2、来实现的。整点报时和闹钟的功能主要是通过软件以及单片机的控制来实现的。显然我们还要再加上一些必要的按键，我们的按键电路包含四个按键，分别用于对调整项的选择、上调、下调和闹钟停止。另外的一个复位按键与单片机最小系统是一个整体。关键词：电子钟，日期，时间，整点报时，闹钟，温度显示-25-基于单片机的数字电子钟设计目录1数字电子钟的设计要求···············································第3页1.1基本要求·······················································

3、·····第3页1.2扩展功能····························································第3页2硬件简介···························································第3页2.1AT89C51单片机简介··················································第3页2.2时钟芯片DS1302简介················································第4页2

4、.3温度采集芯片DS18B20简介··········································第4页3软件简介····························································第5页3.1Protues软件························································第5页3.2Keil软件···························································第5页4数字电子钟系统

5、说明··················································第6页4.1系统说明····························································第6页4.2模块说明····························································第6页4.2.1电源部分···························································第6页-25-基于单片机的数字电子

6、钟设计4.2.2时钟电路···························································第7页4.2.3复位电路···························································第7页4.2.4按键电路···························································第7页4.2.5时钟芯片工作电路···················································

7、第8页4.2.6温度采集芯片工作电路···············································第8页4.2.7发光二极管工作电路·················································第9页4.2.8液晶显示器工作电路·················································第9页4.3基本功能实现原理···················································第10页4.4扩展功能实现原理···

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