目 录
1 引言 ..........................................................................................................1
2设计原理及要求 .....................................................................................2
2.1数字电压表的实现原理...............................................................2
2.2数字电压表的设计要求 ..............................................................2
3软件仿真电路设计.................................................................................3
3.1设计思路 ........................................................................................3
3.2仿真电路图 ...................................................................................3
3.3设计过程 .......................................................................................4
3.4 AT89C51的功能介绍 .................................................................4
3.4.1简单概述..............................................................................4
3.4.2主要功能特性.....................................................................5
3.4.3 AT89C51的引脚介绍 .......................................................5
3.5 ADC0808的引脚及功能介绍....................................................7
3.5.1芯片概述..............................................................................7
3.5.2 引脚简介............................................................................8
3.5.3 ADC0808的转换原理......................................................8
3.6 74LS373芯片的引脚及功能......................................................9
3.6.1芯片概述..............................................................................9
3.6.2引脚介绍 .............................................................................9
3.7 LED数码管的控制显示 ..............................................................9
3.7.1 LED数码管的模型.............................................................9
