利用串口方式读取数据库，对于实时监测系统有帮助

get contact from outlook and outlook express .use windows address book.

详细介绍了 当前流行的openet软件的应用 t通过学习 可以对无线协议进行仿真 -Detailed introduction of the current popular software applications Openet t Through the study of wireless protocols can be simulated

这是一个利用RS232串口通讯的C++源码.-This is an RS232 serial communication using the C source.

我勒个去，还要怎么详细？就是和标题一样。LDPC码的编解码，用matlab写的。

这是个点对点的交流工具，而且容许你在同一时间同步和一个人进行相互聊天和相互传输文件-This is a peer-to-peer communication tools, but at the same time allow you to synchronize and a person to chat with each other and transfer files

这是个经典的用api进行串口编程的例子- This is classical carries on the string mouth programming with api the example

SIP. Understanding the Session Initiation Protocol Second Edition.rar全面介绍SIP RFC3261-SIP. Understanding the Second Session Initiation Protocol Edition.rar introduced SIP RFC3261

modbus协议中文版，详细。适合初学者学习用。-Chinese version of Modbus protocol in detail. Suitable for beginners to learn.

基于ATmega16单片机设计的串口波特率发送程序。下载方便。-ATmega16-based single-chip serial port baud rate to send the design process. Download easy.

本文主要阐述了DTMF的原理及如何在MATLAB上产生DTMF信号，主要涉及到电话拨号音合成的基本原理及识别的主要方法，利用 MATLAB 软件以及 FFT 算法实现对电话通信系统中拨号音的合成与识别。并进一步利用 MATLAB 中的图形用户界面 GUI 制作简单直观的模拟界面。 能够利用矩阵不同的基频合成 0 － 9 不同按键的拨号音，并能够对不同的拨号音加以正确的识别，实现由拨号音解析出电话号码的过程，完成对电话拨号音系统的简单的实验仿真。-This paper described the principle and how DTMF in MATLAB to generate DTMF signals, mainly related to the telephone dial tone of the basic principles of synthesis and identification of the main methods, the use of MATLAB software and the FFT algorithm on the telephone communication system dial tone Synthesis and Recognition . And further the use of MATLAB in the production of graphical user interface simple and intuitive GUI interface simulation. Able to take advantage of matrix synthesis of different fundamental frequency 0- 9 different keys of the dial tone and be able to different dial tone to be the correct identification, the dial tone from a telephone number to resolve the process of completion of the telephone dial tone system, a simple experiment simulation