基于at89c51单片机的电压表设计

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1、课程设计成果说明书题目：基于AT89C51单片机的电压表设计学生姓名：学号：学院：班级：指导教师：2014年12月21日0Ⅰ浙江海洋学院课程设计任务书2014—2015学年第1学期学院班级专业学生姓名(学号)课程名称单片机课程设计设计题目基于AT89C51单片机的数字电压表完成期限自2014年12月21日至2015年1月5日共2周设计依据1.AT89C51单片机的功能。2.ADC8080模数转换芯片的功能。3.LCD液晶显示原理。设计要求及主要内容1.用AT89C51单片机及ADC0808，设计一种数字电压表。 2.查相关资料，完成硬件设计

2、和软件设计。 3.画出程序流程图及写出程序清单。 4.对开发关键技术、主要芯片加以介绍。5.按要求写硬件实习报告。 6.用Proteus实现电路软硬件仿真。 7.通过电位器取得0~5V的电压，用ADC0808转换后通过LCD显示。参考资料[1].《单片机原理及及应用》王迎旭编机械工业出版社.[2].《微型计算机原理与接口技术》吴秀清编中国科学技术出版社.[3].《51系列单片机原理及设计实例》楼然苗，李良儿等编北京航空航天大学出版社.指导教师签字日期Ⅱ基于AT89C51单片机的数字电压表设计摘要：随着信息化技术的发展，电子检测经常需要测量高

3、精度的电压。本设计是利用仿真软件Proteus仿真的数字电压表。它基于AT89C51单片机作为主控芯片，用ADC0808A/D转换芯片将电压的模拟量转换为数字量并传给单片机，单片机处理后再由液晶LM016L实现液晶显示，可测量0—5V的电压量，精度为2位小数，误差为0.01V。关键字：数字电压表；AT89C51单片机；Proteus仿真；A/D转换；液晶显示Ⅲ目录前言················································································1第一章系统总体

4、方案选择与说明··············································21.1设计要求·····································································21.2设计思路·····································································21.3设计方案··························································

5、··········2第二章硬件电路设计····························································32.1AT89C51的功能介绍···························································32.1.1简单概述·······························································32.1.2主要功能特性·································

6、···························32.1.3AT89C51的引脚介绍·····················································42.2ADC0808的引脚及功能介绍·····················································4Ⅳ2.2.1芯片概述·······························································42.2.2引脚简介···················

7、·············································52.2.3ADC0808的转换原理·····················································52.2.4ADC0808电路接线图······················································52.3显示电路····································································62.3.1LM0

8、16L的结构及功能····················································62.3.2LM016L的引脚功能介绍·········