公民煤层气

适用于音频过采样DAC的插值滤波器的设计 一种通用便携式数字音频系统sigma-delta DAC中的插值滤波器。-Over-sampling DAC for audio interpolation filter design a general-purpose portable digital audio systems in the sigma-delta DAC interpolation filter.

哈夫曼树中,树的带权路径长度的含义是各个字符的码长与其出现的此时的乘积和, 也就是电文的代码总长,所以采用哈夫曼树构造的编码是一种能使电文代码总长最短的 不等长编码。-Huffman tree. tree with the right path length is the meaning of the various characters code length of time with the product and, is the message code chief Therefore, the tree structure used Huffman coding can be a code message from the chief of the shortest length coding.

本文介绍了在window环境下，利用c 语言，在基于TCP/IP协议的嵌入式系统上移植以太网协议，实现了数据的高速、准确传送。 -This paper presents the window environment, the use of c language, Based on TCP/IP protocol embedded systems transplant Ethernet agreement, the data"s high-speed, accurate transmission.

文中详细介绍了SIP各个层次模块的功能和设计，描述了重要的协议流程 和设计方法，重点阐述了关键技术的使用和实现中需要解决的问题，最后设计了网 络拓扑对协议栈进行了功能测试，测试结果表明该 SIP 协议栈的实现完全满足 VoIP 网关对信令建链功能的需求。 -paper describes in detail the various levels of SIP module and functional design, Description of the important agreements and design process, focuses on the key technology use and realization of the need to address the problem, final design of the network topology of the protocol stack for functional testing, Test results show that the SIP protocol stack to achieve fully meet the VoIP Signaling Gateway to build the demand chain functions.

FPGA/CPLD数字电路设计经验分享，有助于设计能力提高-FPGA/CPLD digital circuit design experience to share, contribute to the design capacity to improve

psos参考文档-PsOS reference documents

依据电子式电流互感器标准 ＩＥＣ６００４４－ ８，对电子式互感器的数字输出接口进行了研究，对规约中规定的电子式互感器的结构、数字输出的物理层、链路层以及应用层进行了详细地分析，并提出了具体的解决方案。-based Electronic Current Transformer standard IEC60044-8, Electronic Transformer right to a digital output interface for the study of the Statute provides electronic transformer structure, digital output of the physical layer, data link layer and the application layer conducted a detailed analysis of the situation and put forward specific solutions.

该论文以CAN总线的实时性问题为研究对象，在系统分析了CAN总线协议的特点并指出CAN总线的主要局限性的基础上，对CAN总线网络通信的实时性问题进行理论分析。 -CAN bus to the paper issues real-time study in the analysis of the characteristics of CAN bus protocol and pointed out that the main limitations of CAN bus based on CAN bus network communication theory in real-time analysis of issues .

这是一份关于网络工程的课程设计报告详细介绍布线的方案-This is a network works on the design of a detailed report on the program Cabling

ATMEL基于ARM的芯片选型指南ATMEL基于ARM的芯片选型指南-ARM-based chip ATMEL Selection Guide ATMEL chips based on ARM Selection Guide