200之间网络通信读写数据的程序，包括通信口，数据速率，控制字等的设置。...

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GTP信令规定了移动台MS接入GPRS网络的隧道控制和管理协议要求，信令主要执行建立、修改和删除隧道的功能。在用户面，GTP利用GSN之间建立的隧道传送用户数据分组。-GTP signaling provides GPRS mobile station MS network access control and management of the tunnel requirements in the agreement, signaling the main executive to establish, modify and delete functions of the tunnel. In the user plane, GTP using GSN tunnel established between the transmission of user data packet.

Java即时通信工具(JICQ)设计文档(PPT)，内容详细。-Java instant communication tools (JICQ) design documentation (PPT), which detailed.

这是XMODEM传输协议原代码,测试只能证明错误的存在，而不能表明程序中没有错误。 测试的两个作用是：确定程序中缺陷的存在；有助于判断该程序在实际上是否可用。 软件测试最困难的问题之一是知道何时停止测试(When to stop testing? ) 自己测试自己的程序是不可能的。 当一个软件被测出的缺陷数目增加时，更多的未被发现的缺陷存在的概率也随之增加。 -This XMODEM transfer protocol source code, the test can only be proved wrong there and not show anything wrong procedure. The two test role is : procedures for determining the existence of defects; Contribute to the judge whether the procedure can be used in practice. Software testing the most difficult one of the problems is to know when to stop testing (When to stop testing) testing their own procedures is not possible. When a software detected the increase in the number of defects, more undiscovered flaws in the probability has increased.

AT Command for work with pc and mobile modem and etc.

Windows CE 串口通讯程序，可用于Wince 4.0以上的版本，使用EVC++ 4.0编写-Windows CE serial communication procedures, can be used for Wince 4.0 or later, use EVC++ 4.0 preparation

VB6.0环境下利用Mscomm控件实现串行通信-VB6.0 environment using Mscomm Serial Communication Control

支持ZModem协议的串口通讯程序 -Serial communication supports ZModem protocol

lab_C, lab_C, lab_C, lab_C, -lab_C, lab_C, lab_C, lab_C, lab_C, lab_C, lab_C, lab_C,

用IIR滤波器实现去除信号中的直流分量.用很少的资源实现去除直流分量的功能。-remove the DC vector from the signal。implement the DC removing function using little resource.