This is a communications software

本程序使用VB语言编程，使用WinSock控件完成的点对点（P2P）聊天和文件传输程序。可以实现两台机器间互发消息，并且有聊天和文件传输记录，安全可靠。-procedures for the use of the VB programming language. Use Winsock Control to complete the peer-to-peer (P2P) file transfer and chat procedures. Can be achieved between the two machines each other copies, as well as chat and file transfer records, safe and reliable.

GB20999-2007-T 交通信号控制机与上位机间的数据通信协议，该标准定义了交通信号机与上位机的行业标准，方便了不同厂家信号机与后台管控平台的对接。

一个网络ip电话的实现我也是从其他的地方下的 不好意思-a telephone network ip I also realize from other places under the sorry

Apro控件，它是一套功能强大的窗口通讯控件，包括整套使用Fax Modem收发传真的解决方案，很好用！-Apro control, it is a powerful communication window controls, including the use of Fax Modem package transceiver fax solution is useful!

generation of rectangular shape signal. for a rectangular shape of width 1, sinc result also included

sip协议的中文版本，对通信开发很有帮助。-sip the Chinese version of the agreement on the development of useful communication.

很好的卷积码译码资料，关键字Viterbi 译码算法，BCJR 译码算法-Good convolutional codes decoding information, keyword Viterbi decoding algorithm, BCJR decoding algorithm

开发OPC server的一个例范。OPC主要适用于过程控制和制造自动化等应用领域，你可以从该例子中学习如何编写一个服务器程序。-development of the OPC server Fan 1 cases. OPC is primarily applicable to process control and manufacturing automation applications, you can from the examples to learn how to prepare a server.

采用C++ Builder开发的GPS接收程序，串口采用SPCOMM控件，能够从接收的数据中读取时间、经纬度。-with C Builder development of the GPS receiver procedures used SPCOMM Serial control, to receive data from the reading time, longitude and latitude.

小型通讯程序的C语言源程序的C语言源程序库,都是C源程序,仅用于学习.-Small communication program of the C language source C language source code library, is C source code only for learning.