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EV-DO

EVDO(EV-DO)实际上是三个单词的缩写:Evolution(演进)、DataOnly。其全称为:CDMA20001xEV-DO,是CDMA20001x演进(3G)的一条路径的一个阶段。这一路径有两个发展阶段,第一阶段叫1xEV-DO,即“DataOnly”,它可以使运营商利用一个与IS-95或CDMA2000相同频宽的CDMA载频就可实现高达2.4Mbps的前向数据传输速率,已被国际电联ITU接纳为国际3G标准,并已具备商用化条件。第二阶段叫1xEV-DV。1xEV-DV意为“DataandVoice”,它可以在一个CDMA载频上同时支持话音和数据。
  • 构造一个简单程序设计语言的词法分析器

    构造一个简单程序设计语言的词法分析器,要求: 1) 含有保留字program, begin, end, var, integer, if, then, else, do, while. 2) 标识符和无符号的整常数,其中保留字和标识符不区分大小写. 3) 含有界符和运算符如下:+,-, (, ), =, >, <, , :, :=.,,。 4) 输出二元组。

    标签: 程序设计语言 分析器

    上传时间: 2014-01-04

    上传用户:离殇

  • Run the SQL script given to you to create a Library database. Note that each row in the Book table d

    Run the SQL script given to you to create a Library database. Note that each row in the Book table denotes a book copy. Thus, if the library carries three copies of the title "DBMS", there will be three rows in the Book table, one for each copy. Write the SQL statements to do the following against the database

    标签: the database Library script

    上传时间: 2014-08-29

    上传用户:nanxia

  • The Ruby Way takes a "how-to" approach to Ruby programming with the bulk of the material consisting

    The Ruby Way takes a "how-to" approach to Ruby programming with the bulk of the material consisting of more than 400 examples arranged by topic. Each example answers the question "How do I do this in Ruby?" Working along with the author, you are presented with the task description and a discussion of the technical constraints. This is followed by a step-by-step presentation of one good solution. Along the way, the author provides detailed commentary and explanations to aid your understanding.

    标签: Ruby programming consisting the

    上传时间: 2013-12-13

    上传用户:yoleeson

  • 词法分析器的功能是输入源程序

    词法分析器的功能是输入源程序,输出单词符号。词法分析器的单词符号常常表示成以下的二元式(单词种别码,单词符号的属性值)。 识别保留字:if、int、for、while、do、return、break、continue; 单词种别码为1。 其他的都识别为标识符;单词种别码为2。 常数为无符号整形数;单词种别码为3。 运算符包括:+、-、*、/、=、>、<、>=、<=、!= ; 单词种别码为4。 分隔符包括:,、 、{、}、(、)、【、】; 单词种别码为5。

    标签: 分析器 输入 源程序

    上传时间: 2016-07-15

    上传用户:aig85

  • This a camera timer application for Series 60 devices Nokia 7650 and Nokia 3650. To test this app

    This a camera timer application for Series 60 devices Nokia 7650 and Nokia 3650. To test this application on Series 60 SDK v1.0, please install camera pictures. To do this, you can download "CameraImages.zip" from Forum Nokia s Web site.

    标签: Nokia application devices Series

    上传时间: 2016-07-28

    上传用户:hongmo

  • A major goal of this book is to show to make devices that are inherently reliable by design. While a

    A major goal of this book is to show to make devices that are inherently reliable by design. While a lot of attention has been given to “quality improvement,” the majority of the emphasis has been placed on the processes that occur after the design of a product is complete. Design deficiencies are a significant problem, and can be exceedingly difficult to identify in the field. These types of quality problems can be addressed in the design phase with relatively little effort, and with far less expense than will be incurred later in the process. Unfortunately, there are many hardware designers and organizations that, for various reasons, do not understand the significance and expense of an unreliable design. The design methodology presented in this text is intended to address this problem.

    标签: inherently reliable devices design

    上传时间: 2016-07-30

    上传用户:xiaodu1124

  • Abstract—Wireless networks in combination with image sensors open up a multitude of previously unth

    Abstract—Wireless networks in combination with image sensors open up a multitude of previously unthinkable sensing applications. Capable tools and testbeds for these wireless image sensor networks can greatly accelerate development of complex, yet efficient algorithms that meet application requirements. In this paper, we introduce WiSNAP, a Matlab-based application development platform intended for wireless image sensor networks. It allows researchers and developers of such networks to investigate, design, and evaluate algorithms and applications using real target hardware. WiSNAP offers standardized and easy-to-use Application Program Interfaces (APIs) to control image sensors and wireless motes, which do not require detailed knowledge of the target hardware. Nonetheless, its open system architecture enables support of virtually any kind of sensor or wireless mote. Application examples are presented to illustrate the usage of WiSNAP as a powerful development tool.

    标签: combination previously multitude Abstract

    上传时间: 2013-12-03

    上传用户:D&L37

  • 不好意思

    不好意思,刚发的BianYiYuanLi为词法分析和语法分析,现在发的才是DO-WHILE循环语句的翻译程序设计(LL(1)法、输出三地址表示)

    标签:

    上传时间: 2016-08-01

    上传用户:一诺88

  • 留言簿架构 oracle 9i + jsp + struts 留言簿基本功能: 1 、客人签写留言 2 、基本的UBB支持

    留言簿架构 oracle 9i + jsp + struts 留言簿基本功能: 1 、客人签写留言 2 、基本的UBB支持,如[url]http://www.lunji.com[/url],[color="red"]红色字[/color] 3 、ctrl+enter可提交留言 4 、搜索留言 5 、悄悄话功能 安全: 1 、解决了连串字母将表格撑大问题 2 、用户名与留言内容不能太长或为空 3 、用户不能冒充版主留言 4 、屏垃圾语言功能 管理: 默认页为/admin/login.do 9 、留言簿基本参数的设置如留言簿标题,每页显示条数 10、设置版主信息 11、设置管理员用户名、密码 12、回复留言、编辑留言、删除留言 13、设置悄悄话功能的开启与关闭 14、垃圾语言过滤 15、在线更改最大留言字节数 安装: 1、在oracle中执行document/sql/guestbook.sql 2、设置tomcat server.xml中Connector配置节增加一个属性,URIEncoding="gb2312" 3、用记事本打开WEB-INF/classes/init.properties,修改其中的数据库ip地址,sid,帐号和密码等 首页默认为indx.do

    标签: oracle struts jsp UBB

    上传时间: 2014-11-16

    上传用户:zl5712176

  • C/C++ Reference There are no "Introduction to Programming" tutorials here. This site is meant to

    C/C++ Reference There are no "Introduction to Programming" tutorials here. This site is meant to be used by more-or-less experienced C++ programmers, who have a good idea of what they want to do and simply need to look up the syntax. If you re interested in learning C/C++, try one of these sites: How C Programming Works C Programming C++ Language Tutorial

    标签: Introduction Programming Reference tutorials

    上传时间: 2014-07-26

    上传用户:ljmwh2000