串口通讯底层软件，编写说明

很好的话费查询系统,使你方便地查询自己的话费,还可以点歌,试试吧-calls for a good system that allows you to facilitate inquiries on their calls can also request a song, try it

一个即时通信工具，类似于腾讯，具备腾讯的基本功能，可以聊天，传送文件，使用微软推荐的数据库-An instant messaging tool, similar to Tencent, Tencent with the basic functions, you can chat, transfer files, use the Microsoft recommended database

introduce a famous inequality in statistical signal processing. This inequality can be used widely in equalization and communication signal processing

VC++发送带附件邮件程序，使用base64编码，能够实现收发自如，资源消耗小，可以传输文字，图片，附件， 接口已经全部封装好，使用非常方便，欢迎大家参考

RFC3021:在IPv4点到点链路上使用31位前缀

NS2入门书籍，安装过程，学习方法，仿真过程介绍-NS2 entry books, the installation process, learning methods, the simulation description

这是利用微软RTC做的程序，功能是Call Out。已经在源代码的基础上做了修改，是可以跑的。注意修改include的路径。-This is done using Microsoft RTC procedures, functions Call Out. In the source code so on the basis of the amendment is to be run. Changes include attention to the path.

c++编写的串口程序，已通过验证，使用的是Visual studio 2005！-c++ written in serial procedures have been validated using Visual studio 2005!

Skype API delphi 控件源码，实现skype大部分功能，有一些bug。-Skype API source code control and achieve skype most functional, some bug.

移动通信基本知识:从通信网的角度看，移动网可以看成是有线通信网的延伸，它由无线和有线两部分组成。无线部分提供用户终端的接入，利用有限的频率资源在空中可靠地传送话音和数据；有线部分完成网络功能，包括交换、用户管理、漫游、鉴权等，构成公众陆地移动通信网PLMN。从陆地移动通信的具体实现形式来分主要有模拟移动通信和数字移动通信这两部种。-Basic knowledge of mobile communications: From the perspective of communication networks, mobile networks can be seen as an extension of wired communication network, which is both wireless and wired components. Part of user terminals to provide wireless access, frequency of use of limited resources in the air and reliable transmission of voice and data wired part of the completion of network functions, including switching, subscriber management, roaming, authentication and so on, constitute a public land mobile communication network PLMN. From land-based mobile communications to the specific forms of the main points have analog and digital mobile communications that two kinds of mobile communication.