这是一个用VC编写的串口程序 内容很全，可以学习借鉴。

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RTL8139 可能是目前最受欢迎的网卡，它的价格便宜，功能上也还能接受。本文介绍了Windows环境下RTL8139网卡的驱动编程技术，其中主要对网卡驱动中最重要的收发包过程进行了深入分析。-RTL8139 is currently the most popular card, it"s cheap, functional but still acceptable. This paper introduces the Windows environment RTL8139 Ethernet technology driven programming, which mainly driven right card the most important packet transceiver process of in-depth analysis.

西门子plc与上位机通信的源码程序，详细的说明西门子ppi通信协议的应用-Siemens plc Communication between PC and the source program, detailed description of the application of communication protocol Siemens ppi

这是一个通讯软件-This is a communications software

用于网络通讯测试,测试网络通讯的误码率.-For network communications test, test network communications BER.

监控串口的传送状态,还可以打印监视报表,以及各种校验方式.不妨试试看-monitoring serial transmission of the state, but also can print statements surveillance, and various calibration mode. May Try

想做AVR下移植UC／OS－II RTOS的朋友可以用这个教程来摆脱ICC编译器的单调界面，使写程序与改程序变得更加简单，方便-AVR wants to transplant under the UC/OS-II RTOS of a friend can use this course to shake off the monotony of ICC compiler interface, so that written procedures and the procedures to become more simple and convenient! ! !

zigbee网络中cskip算法的原理和VC++的实现代码-zigbee network cskip algorithm principle and the realization of VC++ code

GSMl3层概述,需要了解的朋友可以看一下,是ETSI文档.-GSMl3 outlined layer, need to know you can look at is the ETSI document.

获取Modem的信息 -Getting the information of Modem