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说明：  通过修改，注册表，实现修改默认打印机功能(it is used to modify the setting of the defualted printer )

ZXPortMap 端口映射源代码 一个很好的端口映射工具(ZXPortMap port mapping source code for a good port mapping tool)

利用分形和混沌理论，生成十分精美的2维图形。有多种参数可以对图形进行控制。(use fractal and chaos theory, generate very attractive two-dimensional graphics. A number of parameters can control graphics.)

1302驱动文件，可以直接用来驱动1302时钟芯片，调试过，好使。(1302 driver files, can be directly used to drive the 1302 clock chip, debugging, and so.)

This is Visual C++ how to create wirus , with install instruction inside

windows客户端与服务器之间的网络通信代码(windows between the client and server network communications code)

WINPCAP 抓包工具，可以用来抓包等功能，十分简单的代码，可以直接使用(WINPCAP tools)

C/C++ Unreal Streaming Technologies SDK v 5.5

C++编写的简单分数类（包含复制，约分，四则运算等）(Simple fraction classes written in C++ (including duplication, reduction, four operations, etc.))

该程序实现水声信道的模拟方法及性能分析，提出了一种信的水声信道模型(The program implements underwater acoustic channel simulation methods and performance analysis, presents a letter of underwater acoustic channel model)