虫虫首页| 资源下载| 资源专辑| 精品软件
登录| 注册

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。
  • Zlib函数列表 We often get questions about how the deflate() and inflate() functions should be used. User

    Zlib函数列表 We often get questions about how the deflate() and inflate() functions should be used. Users wonder when they should provide more input, when they should use more output, what to do with a Z_BUF_ERROR, how to make sure the process terminates properly, and so on. So for those who have read zlib.h (a few times), and would like further edification, below is an annotated example in C of simple routines to compress and decompress from an input file to an output file using deflate() and inflate() respectively. The annotations are interspersed between lines of the code. So please read between the lines. We hope this helps explain some of the intricacies of zlib.

    标签: functions questions deflate inflate

    上传时间: 2014-01-03

    上传用户:lhc9102

  • SQL Server developers and administrators are no strangers to Data Transformation Services (DTS) pack

    SQL Server developers and administrators are no strangers to Data Transformation Services (DTS) packages. They likely develop DTS packages to perform everything from simple database operations to data aggregation. As such, when they upgrade some or all of their servers to SQL Server 2005, they must decide what to do with all of their DTS packages

    标签: administrators Transformation developers strangers

    上传时间: 2013-12-26

    上传用户:zhengzg

  • The concept of sustainable development has received growing recognition, but it is a new idea for m

    The concept of sustainable development has received growing recognition, but it is a new idea for many business executives. For most, the concept remains abstract and theoretical. Protecting an organization’s capital base is a well-accepted business principle. Yet organizations do not generally recognize

    标签: development sustainable recognition received

    上传时间: 2014-09-04

    上传用户:498732662

  • The concept of sustainable development has received growing recognition, but it is a new idea for m

    The concept of sustainable development has received growing recognition, but it is a new idea for many business executives. For most, the concept remains abstract and theoretical. Protecting an organization’s capital base is a well-accepted business principle. Yet organizations do not generally recognize

    标签: development sustainable recognition received

    上传时间: 2013-12-12

    上传用户:362279997

  • Writing Your First ASP Application ( Quick Start ) (Page 1 of 8 ) There are many tutorials out th

    Writing Your First ASP Application ( Quick Start ) (Page 1 of 8 ) There are many tutorials out there that show you how to program in ASP. Some of them are good, and some are bad. Some of them are downright terrible. In any case, you ve read a bit about ASP and now you are ready to build your first application. But where do you start? In my own experience, I have found that I find it easier to learn something if I actually work with it hands-on. Just reading a book or documentation doesn’t give you the practical knowledge you need to be able to rush off and start creating applications. In this article, I will discuss the creation of a very simple application. I will cover what the application will do, how we will approach writing it, demonstrate in code how we will do it, and discuss additional features that could be added to it. Writing Your First ASP Application ( Quick Start ) - Users On Your Website

    标签: Application tutorials Writing First

    上传时间: 2015-11-05

    上传用户:franktu

  • if—else语句

    if—else语句,switch语句,循环结构,do-while语句,for语句, 跳转语句

    标签: else

    上传时间: 2014-01-22

    上传用户:zsjzc

  • 数值计算方法在C语言中的应用 介绍了数值计算方法与计算机程序语言相结合的重要性

    数值计算方法在C语言中的应用 介绍了数值计算方法与计算机程序语言相结合的重要性,在给出牛顿迭代公式之后,阐述了牛顿迭代法在do-while循环中的应用,然后通过实例基于曲线梯形面积求解方法,论述了矩形法和梯形法在for循环中的应用.最后指出:用正确的数值计算方法编写高效的计算机程序解决复杂的实际问题应成为当代理工科大学生必备的基础与技能

    标签: 数值 计算方法 C语言 中的应用

    上传时间: 2013-12-28

    上传用户:qoovoop

  • The functionality is to be designated the corresponding year reign France Thus the year, which was t

    The functionality is to be designated the corresponding year reign France Thus the year, which was the year of the zodiac. But can be designated a specific date date of the lunar calendar. Author Note : I used to do this as a commercial product development PDA calendar procedures in recent transplant PC, ... software categories : algorithm related paper from the shrimp off FO

    标签: year functionality corresponding designated

    上传时间: 2014-05-28

    上传用户:chenxichenyue

  • The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowled

    The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowledge of the elements of arithmetic as they exist on a computer. That conclusion and this book are the result of a long and frustrating search for information on writing arithmetic routines for real-time embedded systems. With instruction cycle times coming down and clock rates going up, it would seem that speed is not a problem in writing fast routines. In addition, math coprocessors are becoming more popular and less expensive than ever before and are readily available. These factors make arithmetic easier and faster to use and implement. However, for many of you the systems that you are working on do not include the latest chips or the faster processors. Some of the most widely used microcontrollers used today are not Digital Signal Processors (DSP), but simple eight-bit controllers such as the Intel 8051 or 8048 microprocessors.

    标签: arithmetic high-speed ultimately efficient

    上传时间: 2014-11-30

    上传用户:lizhen9880

  • C++代码优化.doc VC 常用数据类型总结.doc VC编程经验汇总.doc VC++高级编程.rar VC常用源码.doc VC中的后缀.doc 软件开发原则和处理掉重复的代码.do

    C++代码优化.doc VC 常用数据类型总结.doc VC编程经验汇总.doc VC++高级编程.rar VC常用源码.doc VC中的后缀.doc 软件开发原则和处理掉重复的代码.doc 用户界面设计的技巧与技术.doc 中小型软件项目开发.doc

    标签: VC 代码

    上传时间: 2014-12-07

    上传用户:zxc23456789