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非常详细地介绍了GSM模块AT指令集的每条指令的功能，并附上例子。本文是全中文教程特别适合英文不是很好的初学者。-Very detailed description of the GSM module AT command set the function of each instruction, along with examples. This article is particularly suitable for the Chinese course English is not very good for beginners.

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.

在PC XP、Win7等OS操作系统上进行调试、接收和发送串口调试助手；大概包括三个部分1. 串口封装MSL2.自定位通信协议封装MCB3.GUI封装即，包括三部分工作，利用VS进行开发和调试

移动通信基本知识:从通信网的角度看，移动网可以看成是有线通信网的延伸，它由无线和有线两部分组成。无线部分提供用户终端的接入，利用有限的频率资源在空中可靠地传送话音和数据；有线部分完成网络功能，包括交换、用户管理、漫游、鉴权等，构成公众陆地移动通信网PLMN。从陆地移动通信的具体实现形式来分主要有模拟移动通信和数字移动通信这两部种。-Basic knowledge of mobile communications: From the perspective of communication networks, mobile networks can be seen as an extension of wired communication network, which is both wireless and wired components. Part of user terminals to provide wireless access, frequency of use of limited resources in the air and reliable transmission of voice and data wired part of the completion of network functions, including switching, subscriber management, roaming, authentication and so on, constitute a public land mobile communication network PLMN. From land-based mobile communications to the specific forms of the main points have analog and digital mobile communications that two kinds of mobile communication.

中国联通sgip1.2短消息网关开发接口库-China Unicom sgip1.2 Short Message Gateway Interface Library Development

win32api 可查询api的用法-Win32API available api usage

这个程序可以根据系统的时钟，通过多个计数器的联合使用可以完成秒脉冲信号的产生，并同时输出对应的时分秒信息。-it can generate the second_pulse.and output the time information of the second_pulse

编写WINDOWS通讯底层TCP-IP协议栈源代码.编译通过,好用.-WINDOWS communications underlying the preparation of TCP-IP protocol stack source code. Compilers passed, easy to use.

资源描述程序的消息传递网络。它结合了服务器和客户端。图形界面。在环境Borland C++ Builder创建。

VB 收发短信的例子，采用TaoModual_OCX控件。-VB example to send and receive message using TaoModual_OCX control.