这是一份介绍SIP协议的PPT，详细介绍了SIP协议，可以帮助SIP开发人员理解SIP协议各个消息中的头域，以及应用流程。-this is a point for the sip, it introduces the protocol of sip, it can help for programer for understanding the part

用S7-200PLC的自由口模式和VB中的MSComm控件方便地实现了计算机与S7-200（CPU224）PLC的通讯。计算机作为主站,用户通过计算机可以方便地设置房间的控制指令并向PLC发出控制或监测命令， PLC作为从站来响应计算机发送的指令并采取相应的动作并将房间的电、水、热信息发回到计算机。用户可以通过电脑屏幕实时地监视到房间的电、水、热信息并进行相应的处理。-with S7-200PLC the Free Port Mode and the VB MSComm to realize a trap Computer and S7-200 (CPU224) PLC communications. Computer as a master station, Computer users can easily set up control rooms PLC issued directives to control or monitoring orders, PLC as from the station to respond to orders sent by the computer and take corresponding action will be room for electricity, water, Heat fat information to the computer. The user can screen real-time surveillance of the room electricity, water and heat information and handled accordingly.

mimo信道的matlab仿真,非常详细的matlab程序，有多个M文件-mimo channel matlab simulation, very detailed matlab program, a number of M files

最佳升余弦滚降系统的多径传输. 滚降系数0.5, 取样时间无偏差.-best Raised Cosine system multipath transmission. Roll-off coefficient of 0.5, sampling time without deviation.

利用计算机串口通信，实现对GPRS模块的控制，并进行英文及汉字的编码及发送功能。-Computer serial communication is used to achieve control of the GPRS module and the code in English and Chinese characters and send functions.

modem通讯用Delphi实现的完整例子经典-a modem communication integrity example with Delphi realization

串口调试助手的，很多，但是没有源码，这个就来弥补大家的遗憾-Serial debugging assistants, a lot, but no source, this on the U.S. to make up for the regret

A good utility (sourcecode) to start to send data to a SPI memory Atmel AT45db.

文档主要描述TMS320C5000系列DSP的bootloader技术，讲述了不同的引导方法，对于实际工程应用很有帮助-The main document describes the TMS320C5000 series of DSP

leach energy caluation