实现Labview串口通信功能，使用前必须在在labview中安装visa支持包才可以使用串口功能-Labview serial communication function, before use, you must install visa support package in LabVIEW, you can use the serial port function

Labview简单的GPIB通讯程序，visa函数(There is a simple program for communicate with your instrument with GPIB)