这是一本很好的语言程序设计电子书，特别拿出来与大家共享。 第四部分...

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Modbus是modicom公司提出得一种数据传送方式, 也是现在用的较多的现场总线之一,之所以它这么成功得被应用, 主要原因是因为Modbus协议的简单,和开放性较好-Modbus is modicom companies have a data transmission method is now used more fieldbus one reason why it was such a successful application, the main reason is because the Modbus protocol is simple, and openness better

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组播以其独特的优势，在网络通信方面的应用越来越广泛，但随之而来的就是安全问题，其中密钥管理是最基本的问题之一。本文研究了安全组播中的密钥管理问题。介绍了现有的两种主要解决方案，即SKDC方案和密钥树管理方案，并分析了它们的不足之处，指出基于密钥树的研究方向，在此基础上提出基于Huffman密钥分级树的密钥管理方案，将布尔函数的分析方法运用其中使管理简便化。并对该方案的性能从密钥管理的存储空间和密钥刷新通信量两个方面，给出了相应的分析。-Multicast With its unique advantages in the communication network is widely applied, but the attendant security issues, key management is the most basic one of the problems. This paper studies the security Multicast key management issues. Of the two main existing solutions, and key programs SKDC tree management program analysis of their deficiencies, that the tree on the key directions of research on this basis based on the classification tree Huffman key Key Management Program, Boolean function of the analytical method which enable the use of simple. Program and the performance of key management from the storage space and traffic Key set two, given the corresponding analysis.

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高质量程序设计指南C加加语言，很有用的，包括编程初级及提高方面，有理论，开发环境和技巧性的东西。-High-quality programming guide C Gaga language, very useful, including primary and enhance programming, some theory, the development environment and techniques of East and West.

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Windows网络编程技术 出版社: 机械工业出版社 本书原作者：琼斯 奥朗德 本书开创历史之先河，首先完整披露了如何在32位平台上使用传统的API，如NetBIOS等； 以及如何运用一些新型网络API，如WinSock 2和远程访问服务（RAS）等。本书专门讨论Windows网络编程技术，覆盖Windows 95/98/NT 4/2000/CE平台。内容包括NetBIOS和Windows重定向器方法、Winsock方法、客户端远程访问服务器方法。 -Windows network programming technology Press : industrial machinery original author of the book publishers : Qiongshiaolangde the book created a precedent in history, the first complete disclosure of how the 32-bit platform on the use of traditional APIs if NetBIOS; and how to use some of the new network API, if WinSock 2 and Remote Access Service (RAS). The book devoted to the Windows network programming technology, coverage of Windows 95/98/NT 4/2000/CE platform. Includes NetBIOS, and Windows Redirector, Winsock, client server remote access methods.

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