数字信号处理器dsPIC33F集多通道高精度A/D转换、多通讯模式、看门狗、CMOS Flash技术等于一体，其内部可完成所有数据操作，实现总线不出芯片技术。将该处理器应用于微机保护装置，提出基于dsPIC33F微处理器的微机保护装置的设计方案，给出相应的接口电路与软件流程。该设计方案结构简单，性价比及可靠性高，开发周期短，具有一定的实用推广价值。所研制的微机保护装置现场运行效果良好。 Abstract: The dsPIC33F microprocessor has a plentiful interior resource which contains multi-channel，high precision A/D converters，multi-communication module，watchdog，CMOS Flash technology，and so on.All data manipulations is accomplished interiorly.What is more，it makes the technology that bus does not go beyond the chip comes into practice.The paper put forwards a design scheme based on dsPIC33F microprocessor.The scheme has the advantages of simple structure，high reliability and shortened exploitation cycle.What is more，it has definite practicality and reference.The microcomputer protection device has been put into operation with excellent effects.
上传时间： 2013-11-16
上传用户：开怀常笑
针对视频监控中摄像机镜头光圈大小、图像聚焦、图像变焦三项参数的控制问题，介绍了一种基于89C51单片机的镜头控制电路的设计。 该电路以89C51单片机为核心，结构简单，成本低廉，控制可靠，实现了智能监控终端对摄像参数的完全控制。 Abstract: The design of camera lens control circuit based on 89C51 is introduced. This circuit can adjust parameters of camera such as aperture, zoom and focusing. The practice of project shows that this circuit has advantages of structure simple, low cost and high reliability.
上传时间： 2013-10-28
上传用户：Wwill
The main objective of this book is to present all the relevant informationrequired for RF and micro-wave power amplifier design includingwell-known and novel theoretical approaches and practical design techniquesas well as to suggest optimum design approaches effectively combininganalytical calculations and computer-aided design. This bookcan also be very useful for lecturing to promote the analytical way ofthinking with practical verification by making a bridge between theoryand practice of RF and microwave engineering. As it often happens, anew result is the well-forgotten old one. Therefore, the demonstrationof not only new results based on new technologies or circuit schematicsis given, but some sufficiently old ideas or approaches are also introduced,that could be very useful in modern practice or could contributeto appearance of new ideas or schematic techniques.
标签： Amplifier Microwave Design Power
上传时间： 2013-12-21
上传用户：vodssv
Semiconductor memory, card readers, microprocessors,disc drives, piezoelectric devices and digitally based systemsfurnish transient loads that a voltage regulator mustservice. Ideally, regulator output is invariant during a loadtransient. In practice, some variation is encountered andbecomes problematic if allowable operating voltage tolerancesare exceeded. This mandates testing the regulatorand its associated support components to verify desiredperformance under transient loading conditions. Variousmethods are employable to generate transient loads, allowingobservation of regulator response
上传时间： 2013-11-21
上传用户：semi1981
Beginning with an introduction to 802.11b in general, 802.11 Security gives you a broad basis in theory and practice of wireless security, dispelling some of the myths along the way. In doing so, they provide you with the technical grounding required to think about how the rest of the book applies to your specific needs and situations. If you are a network, security, or systems engineer, or anyone interested in deploying 802.11b--based systems, you ll want this book beside you every step of the way.
标签： 802.11 introduction Beginning Security
上传时间： 2013-12-03
上传用户：CHINA526
Professional verification-A guider for advanced functional verification:Author:PAUL WILCOX Including:Verication practice, Resource usage,The Unified Verification Methodology.etc.
标签： verification-A Professional verification functional
上传时间： 2014-01-17
上传用户：三人用菜
软件开发工程是有趣的、多产的，甚至是大胆的。同时，它也能源源不断地带来商业价值，并保持在我们的掌控之下。 极限编程(XP)的构思和发展是针对小型团队进行软件开发时，在面对不确知的、变化的需求时所产生的特定需要的。这一新的、轻量级的方法学对许多传统思维提出了挑战，这其中包括一个一直以来的假设，即在软件开发过程中，对软件进行一个小小的改动就必然会使其开发成本大大增加。极限编程认可软件开发工程应该节约成本，而且一旦实现了某种节约就应该加以开发利用。 你可以喜欢XP，也可以恨它，但是本书将会使你对如何开发软件有一个全新的认识。KentBeck拥有并经营着First Class软件公司，在这里他把主要精力放在两个最大的兴趣上——模式和极限编程。他一直在研究软件开发的先驱模式、CRC卡、HotDraw画图编辑器框架、xUnit单元测试框架以及测试为先的编程。他发表了五十多篇关于编程的文章，并出版了《The Smalltalk Best practice Patterns》(Prentice-Hall出版社)和《Kent Beck’s Guide to Better Smalltalk：A Sorted Collection》(剑桥大学出版社)两本著作，同时他还是超级畅销书《重构——改善既有代码的设计》(中英文版皆由中国电力出版社出版)的特约撰稿人。
上传时间： 2015-10-02
上传用户：邶刖
THIS SOURCE CODE IS PROVIDED AS IS , WITH NO WARRANTIES WHATSOEVER, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE practice, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED BY THIRD PARTIES
标签： WARRANTIES WHATSOEVER INCLUDING PROVIDED
上传时间： 2013-12-27
上传用户：fanboynet
With the release of PHP 5 web developers need a guide to developing with PHP 5 to both learn its complex new features and more fully implement the long-standing features on which PHP s success is built. PHP 5 in practice is a reference guide that provides developers with easy-to-use and easily extensible code to solve common PHP problems. It focuses on providing real code solutions to problems, allowing the reader to learn by seeing exactly what is happening behind the scenes to get your solution. Because a real-life situation will rarely match the book s example problems precisely, PHP 5 in practice explains the solution well enough that you will understand it and can learn how to truly solve your own problem.
标签： developers developing PHP release
上传时间： 2013-12-17
上传用户：xzt
SpringSide以Spring Framework为核心，以Ruby On Rails的简约风格整合Java社区的众多开源项目，为大家开发Java企业应用提供一个方便起点。 它所整合的Full-Stack 的开源构件库，包括了WebService，JMS，工作流，安全，报表，规则引擎，搜索引擎，定时任务等企业应用特性，以构件式的开发架构，配合Ant脚本与SpringSide-IDE(Eclipse插件)，作为一个一站式的快速Java开发框架。 同时，它的示例代码充分演示了开发团队与SpringSide社区共同总结的，Java企业应用领域方方面面的Best practice。
标签： SpringSide Framework Spring 核心
上传时间： 2015-11-20
上传用户：haoxiyizhong
