基于单片机的电流电压测量系统设计基于单片机的电流电压测量系统设计目录1 前言.................................................................................................................. 21.1 电子测量概述.........................................................................................21.2 数字电压表的特点................................................................................31.3 单片机的概述........................................................................................32 系统方案的选择与论证................................................................................42.1 功能要求.................................................................................................42.2 系统的总体方案规划...........................................................................52.3 各模块方案选择与论证.......................................................................52.3.1 控制模块.........................................................................................52.3.2 量程自动转换模块.......................................................................62.3.3 A/D 转换模块................................................................................62.3.4 显示模块........................................................................................62.3.5 通信模块........................................................................................73 系统的硬件电路设计与实现........................................................................73.1 系统的硬件组成部分............................................................................73.2 主要单元电路设计...............................................................................83.2.1 中央控制模块...............................................................................83.2.2 量程自动转换模块......................................................................93.2.3 A/D 模数转换模块.......................................................