模拟量检测程序，具有输入输出功能，适合开发智能仪表-Analog testing procedures, with input and output functions, for developing intelligent instruments

基于vb的串口通信实例，下位机采用的是XMT-3000A智能仪表-Examples of serial communication based on VB, the lower position machine uses is XMT-3000A intelligent instrument