VS2008开发串口程序入门教程，适合初学者学习。-Serial VS2008 development program started tutorial for beginners to learn.

vb.net 2008 串口发送 接收 demo-vb.net 2008 send and receive serial demo

这只是个小工具，可以根据需要进行DTU的模拟，方便实用。 该工具由VB.NET(2008)编写，里面包含了SOCKET通讯的代码、串口操作的代码，应该对你有所帮助-This is just a small tool that can simulate DTU as needed, convenient and practical. The tool consists of VB.NET (2008) write, which contains SOCKET communication code,

vb官方源码，com，database，datetime，combobox，port，array非常适用(VB official source code, very suitable)