handheld electronic devices play a key role in our everydaylives. Because dependability is paramount, handhelds arecarefully engineered with lightweight power sources forreliable use under normal conditions. But no amount ofcareful engineering can prevent the mistreatment theywill undergo at the hands of humans. For example, whathappens when a factory worker drops a bar code scanner,causing the battery to pop out? Such events areelectronically unpredictable, and important data storedin volatile memory would be lost without some form ofsafety net—namely a short-term power holdup systemthat stores suffi cient energy to supply standby power untilthe battery can be replaced or the data can be stored inpermanent memory.
上传时间： 2013-11-05
上传用户：coeus
介绍一种采用单片机技术和基站器件EM4095的手持式低频RFID读卡器方案。首先对整个系统框架进行说明，然后介绍主要功能模块的设计，给出了各模块的原理图。重点描述了基站器件EM4095的性能参数和功能原理，最后描述了该系统的主程序流程图。 Abstract: In this paper,a handheld RFID reader based on MCU and EM4095 is introduced.At first，the configuration of this system is explained.Then the design of main modules and schematic documents are particularly presented.The parameters and principle of the chip EM4095 are introduced in detail. At last，the main software flow is given
上传时间： 2013-10-18
上传用户：windypsm
We would like to welcome you as a user of the Allegro CX, a rugged, handheld fi eld PC for data collection. Developed with the input of data collection professionals worldwide, the Allegro CX is adaptable and versatile for use in a wide variety of data collection environments. The Allegro CX continues to utilize our ergonomic, lightweight design that is standard in our line of Allegro Field PCs. This design makes your Allegro easy to use for extended periods while moving to and from data collection sites in the fi eld.
上传时间： 2015-01-02
上传用户：zhangyi99104144
WINDOWS CE 通信指南(附光盘) 本书配套光盘内容包括：本书的英文版电子书；SDK for Windows CE，handheld PC Professional Edition 3.0；范例源代码；送“Internet互联网即时通”多媒体学习软件。 本书是Microsoft Windows CE开发人员指南系列丛书之一。Microsoft Windows CE是公司为系统资源有限的设备开发的一种小型操作系统。因为Windows CE具有模块化的设计特征，所以能够适用于多种设备，包括从手提PC（H/PC）到嵌入式系统。全书共分十章：Windows CE通信概述，串行通信，电话API，远程访问服务，Windows插口，Windows连网，Internet连接，安全支持提供者接口密码技术和无线服务。 本书是为Windows CE开发人员编写的，是Windows CE应用程序开发人员必备的手册，同时也可作为广大科技人员，大专院校相关专业师生自学的参考书。 本书配套光盘内容包括：本书的英文版电子书；SDK for Windows CE，handheld PC Professional Edition 3.0；范例源代码；送“Internet互联网即时通”多媒体学习软件。
上传时间： 2015-04-13
上传用户：czl10052678
PIXIL is a small footprint operating environment, complete with PDA PIM applications, a browser and multimedia applications for small handheld and flat-panel based devices.
标签： applications environment footprint operating
上传时间： 2013-12-08
上传用户：Andy123456
Most code samples included on this CD were developed with Microsoft Visual C++ version 5.0 and the Microsoft Windows CE Toolkit for Visual C++ version 5.0. The Sspi and Crypto samples were developed with Microsoft Visual C++ version 6.0 and the Microsoft Windows CE Toolkit for Visual C++ 6.0. The code in sample applications is ported for a handheld PC, but the programming concepts that are presented apply to all Windows CE-based platforms.
标签： Microsoft developed included samples
上传时间： 2015-07-10
上传用户：Pzj
This book is an in-depth exploration into eVB s inherent features, and how to use them to solve likely mobile application programming tasks. After reading the book the reader will be able to write applications tackling a wide array of business problems for Windows CE-powered devices, both customized and for PocketPC and handheld PC products. This book will help ease the transition into the language, and provide a reference for even more experienced developers.
标签： exploration in-depth features inherent
上传时间： 2013-12-12
上传用户：aa54
libgsmc is a GSM Communications library intended to be used as a foundation for phone applications on linux based handheld mobile phones.
标签： Communications applications foundation intended
上传时间： 2016-02-14
上传用户：ecooo
32feet.NET is a shared-source project to make personal area networking technologies such as Bluetooth, Infrared (IrDA) and more, easily accessible from .NET code. Supports desktop, mobile or embedded systems. 32feet.NET is free for commercial or non-commercial use. If you use the binaries you can just use the library as-is, if you make modifications to the source you need to include the 32feet.NET License.txt document and ensure the file headers are not modified/removed. The project currently consists of the following libraries:- Bluetooth IrDA Object Exchange Bluetooth support requires a device with either the Microsoft, Widcomm, BlueSoleil, or Stonestreet One Bluetopia Bluetooth stack. Requires .NET Compact Framework v3.5 or above and Windows CE.NET 4.2 or above, or .NET Framework v3.5 for desktop Windows XP, Vista, 7 and 8. A subset of functionality is available for Windows Phone 8 and Windows Embedded handheld 8 in the InTheHand.Phone.Bluetooth.dll library.
上传时间： 2016-07-06
上传用户：magister2016
In recent years, cellular voice networks have transformed into powerful packet-switched access networks for both voice communication and Internet access. Evolving Universal Mobile Telecommunication System (UMTS) networks and first Long Term Evolution (LTE) installations now deliver bandwidths of several megabits per second to individual users, and mobile access to the Internet from handheld devices and notebooks is no longer perceived as slower than a Digital Subscriber Line (DSL) or cable connection. Bandwidth and capacity demands, however, keep rising because of the increasing number of people using the networks and because of bandwidth-intensive applications such as video streaming. Thus, network manufacturers and network operators need to find ways to continuously increase the capacity and performance of their cellular networks while reducing the cost.
标签： BRINGING NETWORKS Beyond and 3G 4G
上传时间： 2020-05-26
上传用户：shancjb
