基于S3C2410A矩阵键盘扫描程序，GPIO及EINT

本人翻译的RFC5347，方便大家在进行FOIP设计时使用。网上没有中文的，独家所有，本人原创。-I translated RFC5347, designed to facilitate people making use of FOIP. Online there is no Chinese, exclusive of all, I am original.

QAM调制的基本原理 QAM调制实际上是幅度调制和相位调制的组合。相位 + 幅度状态定义了一个数字或数 字的组合。QAM的优点是具有更大的符号率，从而可获得更高的系统效率。通常由符号率 确定占用带宽。因此每个符号的比特（基本信息单位）越多，效率就越高。-QAM modulation of the basic principles are in fact QAM modulation amplitude modulation and phase modulation of the portfolio. Phase+ margin status defines a combination of numbers or figures. The advantage of QAM symbols are greater rate, thus the system efficiency will be higher. Symbol rate is usually determined by the occupied bandwidth. Thus each bit symbols (basic units of information) the more the higher the efficiency.

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利用J2ME再现华容道-use J2ME reproduction HuaRong Road

演示异步通信的实现,是异步通信的典型例程,用VC实现-demonstration of the realization of asynchronous communication, asynchronous communication is a typical routines, with VC

BCH码的编码和解码全部过程的源代码，可以自行改变参数-BCH codes of all the process of encoding and decoding of the source code, can change the parameters

基于ZIGBEE协议通讯的开关程序，仅供参考-ZIGBEE agreement on the switch communications procedures for reference

To show Gibbs phenomenon, using FFTs to sum Fourier Give the curve plot at the end of the simulation

CRC-16 校验码源码整理，虽然很简单，但整理的很详实-CRC-16 check source code collated, although very simple, but very detailed finishing

基于eXosip协议栈的软电话设计与实现-EXosip protocol stack based on the soft phone Design and Implementation