labview上位机波形显示并保存数据，下位机通过串口通信将数据发送到上位机，数据显示并保存在TXT文件里。附带51测试程序。(LabVIEW host computer waveform display and save data, the lower computer through serial communication to send data to the host computer, data display and save in the TXT file. Comes with