使用msp430芯片设计全部系列数显表的原理图。成熟设计，信号测量采用交流采样，线路特别简单。通讯报警变送等常用功能模块也包含在内-Msp430 chip design using all series digital schematics table. Sophisticated design, signal measurement using AC sampling, line especially easy. Commonly used communications features su