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Java编程 today bought a book, reflected good to upload source code package. 1. Based on the struts of custome
today bought a book, reflected good to upload source code package. 1. Based on the struts of customer information management system 2. Struts-based personnel management system 3. Office log system 4. E-government management system 5. Food industry Invoicing System 6 SMS Data Acquisition System
PCB相关 高速电路传输线效应分析与处理
随着系统设计复杂性和集成度的大规模提高，电子系统设计师们正在从事100MHZ以上的电路设计，总线的工作频率也已经达到或者超过50MHZ，有一大部分甚至超过100MHZ。目前约80% 的设计的时钟频率超过50MHz，将近50% 以上的设计主频超过120MHz，有20%甚至超过500M。当系统工作在50MHz时，将产生传输线效应和信号的完整性问题；而 ...
单片机编程 基于MC9S12HZ256的总线式汽车数字仪表设计
首先研究CAN总线和SAE J1939协议，提出一种基于MC9S12HZ256微控制器的总线式汽车数字仪表解决方案。详细介绍SAE J1939协议的报文帧格式及应用层协议中发动机相关参数的定义，以及步进电机及其驱动和车速信号的处理方法。该数字仪表系统硬件平台由微处理器和信号采集和信息处理及显示等模块组成。软件设计部分编程实现了对CA ...
可编程逻辑 高速电路传输线效应分析与处理
随着系统设计复杂性和集成度的大规模提高，电子系统设计师们正在从事100MHZ以上的电路设计，总线的工作频率也已经达到或者超过50MHZ，有一大部分甚至超过100MHZ。目前约80% 的设计的时钟频率超过50MHz，将近50% 以上的设计主频超过120MHz，有20%甚至超过500M。当系统工作在50MHz时，将产生传输线效应和信号的完整性问题；而 ...
其他嵌入式/单片机内容 The MATLAB coding style, project options and synthesis directives can have a significant effect on t
The MATLAB coding style, project options and synthesis directives can have a significant effect on the final results. Knowledge about how a particular algorithm should be implemented in hardware can be reflected in the MATLAB code to improve the results. In doing so, the MATLAB loses a bit of its ab ...
单片机开发 A new cable fault location method based on wavelet reconstruction is proposed. In this method the
A new cable fault location method based on
wavelet reconstruction is proposed. In this method the
difference between the currents of faulty phase and sound
phase under the high voltage pulse excitation is used as the
measured signal and is decomposed in multi-scale by wavelet
transform, then reconst ...
书籍 GSM+Networks
Someone who wants to get to know the customs of a country frequently
receives the advice to learn the language of that country. Why? Because the dif-
ferences that distinguish the people of one country from those of another are
reflected in the language. For example, the people of the islands of the ...
书籍 Sharing+RF+Spectrum
This book was born from the perception that there is much more to spectrum use
and sharing than one sees reflected in publications, whether academic, commercial
or political. the former – in good research style – tend towards reductionism and
concentrate on specific, detailed aspects. commercial p ...
技术资料 Qi无线充电原理
近距电能传输——高效安全近距电能传输一般基于电磁感应原理进行。在此技术基础上，当接收器邻近发射器时才会进行电能传输。电磁感应技术的历史长达百年，多年米一直应用于各类电子产品中—如此普及全因其简单、高效以及安全技术概览以下将为你简要介绍无线电能传输技术。System Overview(Communication)Receiver sends mes ...