一个简单的ＳＰＩ ＩＰ核，SPI Core Specifications 可以从说明文档中找到！ The simple Serial Peripheral Interface core is an enhanced version of the Serial Peripheral Interface found on Motorola s M68HC11 family of CPUs. The Serial Peripheral Interface is a serial, synchronous communication protocol that requires a minimum of 3 wires. FEATURES: · Compatible with Motorola’s SPI specifications · Enhanced M68HC11 Serial Peripheral Interface · 4 entries deep read FIFO · 4 entries deep write FIFO · Interrupt generation after 1, 2, 3, or 4 transferred bytes · 8 bit WISHBONE RevB.3 Classic interface · Operates from a wide range of input clock frequencies · Static synchronous design · Fully synthesizable
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上传时间： 2015-09-17
上传用户：TRIFCT
This article describes Atmel’s FingerChip technology for electronic fingerprint sensing that combines the advantages of small size, low cost, high accuracy, zero maintenance, low energy consumption and portability. This technology has applications in a wide range of fixed and portable secured devices including access control systems, cash terminals, public transport, PCs, PDAs, Smart Card readers and motor vehicles. It can be used in almost any situation where rapid, reliable and accurate identification or authentication of an individual is required.
标签： fingerprint FingerChip technology electronic
上传时间： 2013-12-27
上传用户：h886166
The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services. SEDA has three major goals: To support massive concurrency, on the order of tens of thousands of clients per node To exhibit robust performance under wide variations in load and, To simplify the design of complex Internet services. SEDA decomposes a complex, event-driven application into a set of stages connected by queues. This design avoids the high overhead associated with thread-based concurrency models, and decouples event and thread scheduling from application logic. SEDA enables services to be well-conditioned to load, preventing resources from being overcommitted when demand exceeds service capacity. Decomposing services into a set of stages also enables modularity and code reuse, as well as the development of debugging tools for complex event-driven applications.
标签： Event-Driven Architecture Internet building
上传时间： 2015-09-28
上传用户：日光微澜
SCSI-2也称为Fast－SCSI，传输速率为10MB／s。 后采用扩展总线宽度来增加数据流量的方式，提高整 体传输速率，于是SCSI－2规定了16位、32位数据总 线，使传输速率进一步提高为20MB／S，也就是wide －SCSI，或是称作Fast SCSI－2。 wide－SCSI采用4 位定址，使可连接的设备达到了15个。在接口电缆上， 为兼容SCSI－l所使用的A电缆，SCSI－2标准在A 电缆的基础上增加一条68pin的扁平电缆，称为B电 缆。目前还有不少SCSI的CD－ROM、CD－R、CD－ RW还是使用SCSI－2界面。
上传时间： 2014-12-03
上传用户：change0329
The goal of this library is to make ODBC recordsets look just like an STL container. As a user, you can move through our containers using standard STL iterators and if you insert(), erase() or replace() records in our containers changes can be automatically committed to the database for you. The library s compliance with the STL iterator and container standards means you can plug our abstractions into a wide variety of STL algorithms for data storage, searching and manipulation. In addition, the C++ reflection mechanism used by our library to bind to database tables allows us to add generic indexing and lookup properties to our containers with no special code required from the end-user. Because our code takes full advantage of the template mechanism, it adds minimal overhead compared with using raw ODBC calls to access a database.
标签： recordsets container library ODBC
上传时间： 2015-10-11
上传用户：xlcky
This paper introduces an affine invariant of trapezia, and the explicit constraint equation between the intrinsic matrix of a camera and the similarity invariants of a trapezium are established using the affine invariant. By this constraint, the inner parameters, motion parameters of the cameras and the similarity invariants of trapezia can be linearly determined using some prior knowledge on the cameras or the trapezia. The proposed algorithms have wide applicability since parallel lines are not rare in many scenes. Experimental results validate the proposed approaches. This work presents a unifying framework based on the parallelism constraint, and the previous methods based on the parallelograms or the parallelepipeds can be integrated into this framework. Key words: invariant parallelism constraint camera calibration 3D reconstruction
标签： introduces constraint invariant explicit
上传时间： 2014-01-16
上传用户：6546544
《多传感器数据融合手册》 《Handbook of Multisensor Data Fusion》 作者: David L. Hall 定价: USD 199.95 出版社: CRC 出版年: 2001-06-20 简介 · · · · · · Multisensor data fusion is an emerging technology with important applications in both the military and civilian sectors, such as target recognition, robotics, medical diagnostics, and "smart" buildings. It draws on techniques from wide-ranging disciplines, including artificial intelligence, pattern recognition, and statistical estimation. This handbook is an up-to-date, comprehensive resource for data fusion system designers and researchers. Top experts in the field lead readers from a basic introduction and survey of data fusion technology to advanced mathematics and theory and to some very practical advice for systems implementers.
标签： L. Multisensor Handbook 199.95
上传时间： 2014-02-06
上传用户：二驱蚊器
This data set contains WWW-pages collected from computer science departments of various universities in January 1997 by the World wide Knowledge Base (Web->Kb) project of the CMU text learning group. The 8,282 pages were manually classified into the following categories: student (1641) faculty (1124) staff (137) department (182) course (930) project (504) other (3764)
标签： universities departments WWW-pages collected
上传时间： 2015-11-12
上传用户：chenlong
什么是 VBScript？ Microsoft Visual Basic Scripting Edition 是程序开发语言 Visual Basic 家族的最新成员，它将灵活的脚本应用于更广泛的领域，包括 Microsoft Internet Explorer 中的 Web 客户机脚本和 Microsoft Internet Information Service 中的 Web 服务器脚本。 ActiveX脚本可用在 Microsoft(R) Internet Explorer 和 Microsoft(R) Internet Information Service 中。 其他应用程序和浏览器中的 VBScript 作为开发者，您可以在您的产品中免费使用 VBScript 源实现程序。Microsoft 为 32 位 Windows(R) API、16 位 Windows API 和 Macintosh(R) 提供 VBscript 的二进制实现程序。VBScript 与 World wide Web 浏览器集成在一起。VBScript 和 ActiveX脚本也可以在其他应用程序中作为普通脚本语言使用。
标签： Visual Basic Microsoft Scripting
上传时间： 2013-12-14
上传用户：plsee
点阵字体产生工具以及相关显示函数。 在开发嵌入式系统时，需要显示不同大小或类型字体的汉字。显然，对于嵌入式系统，不太可能使用矢量字体，而点阵字体，不同大小的字体不能简单的缩放。 另外，对一个小系统，也不需要完整的字体，往往只要几十个，甚至几个就够了。 一般，我们采用的方法是，自己准备点阵字体的数据，在显示汉字时，把这些数据写入显存就行了。 这时又存在另外一个问题，由于是不完整的字库，不能简单的用汉字的内码去找到对应的字体数据，如果逐个比较，又费时间。比较好的方法就是把字体数据排序，用二分法查找，这样可以大大提高查找效率。 这里为以上问题提供了一个完整的解决方案： 产生字体数据：指定字体类型、大小，自动产生字体数据。 字体数据排序：可以按Unicode，也可以按Ansi排序。 集成显示函数：提供相关显示函数。为了节省空间，我们把文字分成thin和wide两种，前者用于显示传统的ASCII字符集，后者用于显示汉字等多(双)字节字符
上传时间： 2014-12-05
上传用户：xiaoyunyun
