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一个关于串口通信编程的小程序，使用visual c++编写。(Serial communication programming on small procedures, the use of visual c++ Prepared.)

说明：  DNS解析系统，通过发送DNS协议包到DNS服务器来获取DNS(DNS analysis system, the agreement by sending a DNS packet to the DNS server to obtain the DNS)

用VC开发的网络语音电话，希望对您的开发有所帮助。(VC network with the development of voice calls, and they hope to be helpful to your development.)

本书主要介绍了如何用API函数进行网络间通信(The book introduces how to use the API function communication networks)

socket 客户端和服务端发送和接收文件的源代码(the source code of socket in order to send and receive file)

Desktop drawing program, for beginners to understand the vc code is a good example, performance fun and easy to learn

基于socket 的网络编程 客户端 具有上传下载文件功能(Socket-based network programming for clients with upload and download files function)

断点续传 http download ftp mfc(http download download download )

我的毕业设计，一个简单的集聊天，文件传输于一体的vc源码，可选TCP或UDP传输模式！(My graduation project, a simple set chat, file transfer in one vc source, optional TCP or UDP transfer mode!)

说明：  理解局域网的定义、特点 了解局域网的介质访问控制方法 了解以太网技术 了解局域网组网类型(Understand the definition of LAN and characteristics about LAN Ethernet media access control approach to understanding the technical understanding of LAN networking types)