上课的时候用VB编写的文件传输的技巧，有利于初级者学习

模拟路由器的小型程序，可以发出arp请求获得mac地址，进而转发数据包-Simulated router small procedures, may issue a mac address arp request, and then forwarding the packet

使用ICMP.DLL和MIB.DLL实现ping, tracert, netstat -Using ICMP.DLL and MIB.DLL to implement ping, tracert and netstat

p2p源代码的ＴＣＰ nat 穿透原理，希望能够和大家分享，

好的

使用delphi编写的实现局域网内通讯的程序，在delphi6下编译运行通过。-prepared by the use of LAN communications within procedures, the compiler running under Delphi6 through.

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windows网络编程之udp原始套接字-windows udp network"s original programming socket

自动换IP地址，自动获取本地ADSL连接，定时自动拨号，自动缩小到状态栏，拨号日志记录，IP地址记录，可以用来刷IP地址用，刷网站等等。软件很完整。现在发布出来给大家用用，并提供源码下载。-Automatically change IP addresses, automatically get a local ADSL connection, timing automatic dialing, auto-reduced to the status bar, dial-up log records, IP address of record, IP addresses can be used to brush use, brush sites, and more. The software is very complete. Now released for everyone to come out with use, and provide source code to download.

局域网查询工具的源代码 是学习多线程编程。Windows API Helper wincap 编程的好例子，大家一定不要错过了!-Local area network query tool is to learn the source code for multi-threaded programming. Windows API Helper wincap a good example of programming, we must not miss!

本软件是用VB制作的，用于电脑与西门子S7-200PLC(PPI协议)进行通讯，如果您想用VB开发S7-200PLC(PPI协议)上位机控制界面，此软件是您的好帮手！ 1、可以写入、读出寄存器的数值（字节、字、双字）； 2、可以进行元件（V、M、S、Q、I）的置、复位操作； 3、可以读取元件（V、M、S、Q、I）的ON/OFF状态。 4、可以控制PLC的运行、停止。-A simple application of Visual C++