Jak的专栏

iot开发的反思 The emergence of the Internet of Things (IoT) destroys every precedent and preconceived notion of network architecture. To date, networks have been invented by engineers skilled in protocols and routing theory. But the architecture of the Internet of Things will rely much more upon lessons derived from nature than traditional (and ossified, in my opinion) networking schemes. This chapter will consider the reasons why the architecture for the Internet of Things must incorporate a fundamentally different architecture from the traditional Internet, explore the technical and economic foundations of this new architecture, and finally begin to outline a solution to the problem.

网友整理的网络资料，教你一步一步的使用arduino开发板，有很多的图，文字也很浅显易懂

开源硬件Arduino开发项目，适合初学者学习AVR或者Arduino

有关arduino的一些网页资料汇总，介绍的很详细，是很好的范例

SAP Business One implementation Bring the power of SAP Enterprise Resource Planning to your small-to-midsize business

下载了一份中文版，很拗口，所以找了个英文版的，传上来跟大家分享 Book Details Hardcover: 507 pages Publisher: Prentice Hall PTR; 1st edition (October 30, 1997) Language: English ISBN-10: 0137488807 ISBN-13: 978-0137488803 Written for the developer with previous programming and design experience, Applying UML and Patterns combines UML, software patterns, and Java to illustrate the author's own design strategy. Though author Craig Larman sometimes relies heavily on the jargon of software engineering, there's no doubt that his book contains some immediately useful ideas on software design, using the latest and greatest in software-engineering research. This book begins by outlining a basic process of software design using iterative, object-oriented techniques. The case study used for this text is a point-of-sale (POS) system, a helpful real-world example. The book constructs use case diagrams and basic conceptual and class models for this system. The author then adds sequence diagrams to show how the POS system will do its processing and collaboration diagrams to show how objects will interact with one another. The author uses standard UML diagrams to document the design. When it comes to refining class design, the author's experience with patterns really shines. His General Responsibility Assignment Software Patterns (GRASP) suggest guidelines for designing classes that work together effectively. Larman believes that the ability to assign responsibilities to classes effectively is one of the most important aspects of good object-oriented design. His patterns allow this to happen and provide an interesting contribution to the design process. (The author also introduces more widely used software patterns to enhance the design process.) When it comes to coding the design, Java is the programming language of choice for this text. Further chapters discuss how to refine an initial design using an iterative process of software engineering. While it's unlikely that readers will adopt Larman's approach to software design in its entirety, his guidelines--and application of patterns to class design, all documented using UML--make this a worthwhile text for the more experienced reader. --Richard Dragan Book Info Guides students through each step of requirements, analysis, design, and coding. Topics cover Expressing analysis and design models using the UML, a standard diagramming notation, Applying patterns to assign responsibilities and design collaborations and more. DLC: Object-oriented methods.

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