1、 - I - （基于（基于 51 单片机的数字电压表设计）单片机的数字电压表设计） 摘要摘要 单片机是一种集成电路芯片，采用超大规模技术把具有数据处理能力(如算术 运算，逻辑运算、数据传送、中断处理)的微处理器(CPU)。随着单片机技术的飞速 发展，各种单片机蜂拥而至，单片机技术已成为一个国家现代化科技水平的重要标 志。 单片机可单独地完成现代工业控制所要求的智能化控制功能，这是单片机最大 的特征。单片机控制系统能够取代以前利用复杂电子线路或数字电路构成的控制系 统，可以软件控制来实现，并能够实现智能化。现在单片机控制范畴无所不在，例 如通信产品、家用电器、智能仪器仪表、过程控制和专用控制装置
2、等等，单片机的 应用领域越来越广泛。 本毕业设计的课题是“数字电压表的设计”。主要考核我们对单片机技术，编 程能力等方面的情况。观察独立分析、设计单片机的能力，以及实际编程技能。数 字电压表简称 DVM，它是采用数字化测量技术，把连续的模拟量（直流输入电压）转 换成不连续、离散的数字形式并加以显示的仪表。 本课题主要解决A/D转换、数据处理及显示控制等三个模块。A/D 转换主要由 芯片 ADC0804 来完成，它负责把采集到的模拟量转换为相应的数字量再传送到数据 处理模块。控制系统采用 AT 单片机，A/D 转换采用 ADC0804。 关键词关键词：单片机，A/D,A T89C52 转换,AD
3、C0804 - II - Abstract With Chip Processor is a kind of chip of integrated circuit, adopt to exceed large-scale technology have data handling ability( such as arithmetic manipulation, logic is operational , data deliver and suspend handling) tiny processor ( CPU ). Along with Chip Processor technolog
4、y develop fast, various Chip Processor come in great numbers, Chip Processor technology has become a important sign of the national modern level of science and technology. Chip Processor can complete modern industrial control alone the intelligent control function that will beg, this is the feature
5、of biggest Chip Processor. When Chip Processor control system can replace, using the control system that complex electron ic line or digital circuit forms can software control come to realize, and can realize intelligence to melt. Now, Chip Processor control category is omnipresent , for instance co
6、mmunicate product, electric home appliances, intelligent instrument appearance, course control and the control equipment for special purpose and so on, the application field of Chip Processor is more and more extensive. Graduate the program of design is “；the design of digital volmeter “；. Check on our condition for the aspects such as Chip Processor technology and programming ability mainly. Observe actual programming ability as well as the ability of independent analysis and design Chip Proc
