modem at命令集说明

这是在windows上使用modem通信的例子程序，有很高的实用价值，同时也可以学习到tapi的编程方法-This is the windows on the use of the example of modem communications procedures with a high degree of practical value, they can also learn the programming methods TAPI

It is very useful for everyone

UWB_Channel_IEEE_802_15_3a.rar是用MATLAB对UWB信道进行仿真的实例，所仿真的信道是UWB的标准信道模型。-UWB_Channel_IEEE_802_15_3a.rar is used for UWB channel MATLAB simulation examples, the channel simulation is the standard UWB channel model.

Modbus协议规范,非常详细的文档,对编写协议软件有帮助-Modbus

delphi入门基本程序,包括OPC的通用协议,在这个基础上进行各个厂家的设备的数据采集-basic entry procedures, including the OPC common agreement on the basis for all manufacturers of the equipment data acquisition

本文是SIMens公司培训的技术资料，有很好的使用价值-This article is SIMens corporate training technical information, there is a good value

QPSk误码性能的仿真程序，包括AWGN信道和瑞利信道性能曲线-QPSk BER performance simulation procedures, including the AWGN channel and Rayleigh channel performance curve

MFC界面的 API 串口通信 代码非常简单 一看就懂 采用一个线程接收数据，满足简单的开发需要 开发工具VS2005 

资源描述完整的vc++程序，实现串口通信，接收发送数据。

Delphi写的一个比较不错的 OPC DA Server程序，作为开发OPC Server的一个不错参考。OPC 是OLE在工控领域的应用，同一了不同组态软件之间及组态软件与应用程序之间的通讯标准，以前组态软件与应用程序之间的通讯主要是应用DDE技术。-Delphi wrote a quite good OPC DA Server procedures, the development of OPC Server as a good reference. OPC is OLE in the field of industrial applications, the same between different configuration software and configuration software applications and communications between the standard configuration prior to application software and communications between the main technology is the application of DDE.