第1页共18页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共18页基于单片机数字电压表的设计目录一设计目的···································································································3二设计要求···································································································3三方案比较与论证·······················································································33.1单片机介绍·························································································33.2电源方案·····························································································63.3显示方案·····························································································63.4AD采样方案·························································································73.5键盘部分·····························································································7四方案设计····································································································84.1硬件设计·····························································································84.2软件设计·····························································································9五性能测试·································································································105.1电压测试···························································································105.2电阻值测试························································································115.3短路测试···························································································115.4高压报警测试·····················································································115.5串口功能测试·················...
