用TCP编写的chat_server和chat_client，一定要先运行chat_server，再运行chat_client，否则会出错。不必要一方一次说一句...

一个简单的C语言做的通讯录管理系统，用链表实现的，可以实现简单的通讯录管理功能-a simple C language correspondence management system, with the realization Chain, can achieve a simple directory management capabilities

端口专家是一个优秀的端口（串口、并口）监视、调试程序，有以下基本功能： 1.能动态设置各种通讯速率、奇偶校验、数据位、停止位和流控； 2.可以16进制形式自动显示接收到的数据，并能同时发送ASCII码（包括中文）和16进制字符串，可以任意设定自动发送周期,定时发送数据； 3.能将接收数据保存成文本文件,便于比较观察；并能发送任意大小的数据文件（以二进制形式发送）； 4.能自动保存设置参数，无需每次重新设置。-port experts is a good ports (serial, parallel) monitoring, debugging procedures, the following basic functions : 1. Dynamically created various communications rate, parity, data bits, stop-and flow control; 2. May 16-band automatic form of data received and at the same time sending ASCII (including Chinese) and 16 string band can be set to automatically send arbitrary cycle, regularly send data; 3. preservation can receive data into text files, facilitate comparison of observation; and the ability to send any size of paper (in binary form Send); 4. Save the settings automatically parameters, each without re-instated.

这是由 C# 编程的 COM 端口监视器工具。您可以通过查看读/写窗口分析议定书 》。

vc 下的双音多频（DTMF）接收器的使用源程序-vc under the dual tone multi-frequency (DTMF) receiver using the source

使用zmodem协议传输文件的程序,适当修改可以在嵌入式系统中用来传输文件-use agreement Zmodem file transfer procedures, appropriate changes in the embedded systems used to transfer files

电报收发,使用电流环收发电报的服务程序,使用国际电报2号码,内含编码解码函数-cable transceivers, the use of current loop transceiver cable services, the use of two international telex number, containing codec function

ModBus的中文传输协议和调试工具MODBUS通讯测试软件设置说明-ModBus Chinese transport protocol and debugging tools for MODBUS communication test software setup instructions

华为的td-scdma内部讲义，介绍详细-Huawei td-scdma internal notes, introduced in detail

pracsim是一个由仿真模型和可互连的仿真结构组成的模块集，为用户提供一个可修改及开发的基础模型，其他为附属文件。-pracsim is a simulation model and the simulation of interconnection structure of the module set, to provide users with a revised and the development of the model, other subsidiary documents.

远程GPRS注册显示，选中注册的远端。可以进行远程数据下载。-Show long-range GPRS registration, check the registration of the remote. Remote data can be downloaded.