现在我们在超市购物付款时候只要一个识别器就可以很快知道价格,不再是以前的一个算盘或者计算器,加快了付款速度,很好地方便了顾客。无线射频识别(RFID)技术是一种自动识别技术。每一个目标对象在射频读卡器中对应唯一的电子识别码(UID),或者“电子标签”。标签附着在物体上标识目标对象,如纸箱、货盘或包装箱等。射频读卡器(应答器)从电子标签上读取识别码。 表1 RFID频率 基本的RFID系统由三部分组成:天线或线圈、带RFID解码器的收发器和RFID电子标签(每个标签具有唯一的电子识别码)。表1显示了常用的四个RFID频率及其潜在的应用领域。其中,目前商业上应用最广的是超高频(UHF),它在供应链管理中有可能得到广泛的应用。
上传时间: 2013-11-22
上传用户:wayne595
TheTool is highy customizable map editor(based on QT) which can be extended via LUA scripts. A first implentation is ready and can be published to the public. The editor is the perfect tool who wants to design some 3d games but don t have time to write
标签: customizable extended TheTool scripts
上传时间: 2013-12-12
上传用户:lanwei
This article is based in part on Bob Place s ADO is AOK (a simple ADO tutorial). Wrapper Usage This is consist of 2 classes. CDyndb : This Class manages connections and recordsets. Recordsets are organized as linked list (CList) and you can access them using their ids. CDynRec : This class is the node to populate for each recordsets. ADO封装器类 这篇文章一部分基于Bob Place的《ADO is AOK》 (简单的ADO指导) 。 包裹的用法 由2个类组成。 类CDyndb: 这个类别管理连接和记录集。记录集是连接起来的记录的集合,你可以通过他们的ID访问他们。 类CDynRec: 这个类别存放记录集的代码。
上传时间: 2013-12-14
上传用户:wfl_yy
Mantis an easily deployable, web based bugtracker to aid product bug tracking. It requires PHP, MySQL and a web server. It is simpler than Bugzilla and easily editable. Check out the online Demo.
标签: deployable bugtracker requires tracking
上传时间: 2014-01-25
上传用户:小宝爱考拉
This version of dialog, formerly known as cdialog is based on the Debian package for dialog 0.9a (see CHANGES for recent modifications) 这是一个 unix 系统下的对话框管理程序, 你可以将该程序编译后,直接使用。
标签: dialog formerly version cdialog
上传时间: 2013-12-09
上传用户:playboys0
linux client/server based LCD Driver for HD44780
标签: client Driver server linux
上传时间: 2014-12-04
上传用户:kbnswdifs
Unique net-enabled GUI system based state of the art coding solutions with strong XML support.
标签: net-enabled solutions support Unique
上传时间: 2013-12-24
上传用户:1101055045
tiny Web-server based on OpenTCP for MB90F497 Fujitsu and CS8900A Etnernet driver
标签: Web-server Etnernet OpenTCP Fujitsu
上传时间: 2015-01-21
上传用户:冇尾飞铊
Java/J2EE application framework based on [Expert One-on-One J2EE Design and Development] by Rod Johnson. Includes JavaBeans-based configuration, an AOP framework, declarative transaction management, JDBC and Hibernate support, and a web MVC framework.
标签: Development application One-on-One framework
上传时间: 2014-01-09
上传用户:saharawalker
A Cluster-Based Security Architecture for Ad Hoc Networks
标签: Cluster-Based Architecture Security Networks
上传时间: 2015-02-01
上传用户:yxgi5