调用组态王的OPC的动态链接库,用VB写客户端,实现与组态王的数据交换功能-called OPC Kingview the dynamic link library, written by VB client, Implementation and Configuration of the data exchange functions

Delphi implementation of the Windows Telephony headers.

VC++带线程的API串口通信，简单的API串口实现，调试已经通过-VC++ take thread API serial communication, simple API serial implementation, debugging through