Ethernet switch source code

外国网站下载的一款即时通讯软件，试用过巨好。强力推荐！-foreign website includes an instant messaging software giant tested good. Strongly recommended!

可以控制计算机串口操作的串口类，非常好用-can control the operation of the computer serial port Serial category, very handy

This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License, or (at your option) any later version.

CRC的全称为Cyclic Redundancy Check，中文名称为循环冗余校验。它是一类重要的线性分组码，编码和解码方法简单，检错和纠错能力强，在通信领域广泛地用于实现差错控制-CRC called the Cyclic Redundancy Check, the Chinese name of the Cyclic Redundancy Check. It is an important class of linear block codes, encoding and decoding method is simple, and error detection and correction capability in the field of communication widely used to achieve error control

中国联合通信公司 短消息网关系统接口协议客户端演示程序-China unicom corp. Demo programme of short message gateway interface protocol in client

c语言写的通讯方面的源代码，有一定参考价值，是从其它站点下载的。-c language written communications source code and a certain reference value is downloaded from the other site.

ISO/IEC 14443 标准时每一个从事rfid 13.56Mhz开发工作的人员需要了解的关键技术。-ISO/IEC 14443 standard rfid 13.56Mhz every one involved in the development staff need to understand the key technologies.

Huawei Info, mandarin document describing Huawei PM for UMTS projects

this ebook is for basic introduction to CDMA rf enfineering, very good book for basic level

使用Visual Basic 6实现真正实用的多线程串行通讯 事实上使用Visual Basic的ActiveX exe技术可以轻松的实现多线程处理，此技术在串行通讯中很好用，尤其需要一边通讯，一边数据处理方面，如果用timer实现串行通讯，其复杂程度可想而知。这个实例用在PC与PLC通讯以及PC和单片机通讯，都比较实用。 原理先不说了,先举个示例,有兴趣的话大家可以一起讨论