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  第71题      
  知识点:   SD
  章/节:   专业英语       

 
The objective of the systems analysis phase is to understand the proposed project, ensure that it will support business requirements, and build a solid foundation for system development. The systems analysis phase includes four main activities. (71) involves fact-finding to describe the current system and identification of the requirements for the new system, such as outputs, inputs, processes, performance, and security.(72) refer to the logical rules that are applied to transform the data into meaningful information. (73)continues the modeling process by learning how to represent graphically system data and processes using traditional structured analysis techniques. (74) combines data and the processes that act no the data into objects. These objects represent actual people, things, transactions, and events that affect the system. In(75), we will consider various development options and prepare for the transition to the systems design phase of the SDLC.
 
 
  A.  System logical modeling
 
  B.  Use case modeling
 
  C.  Requirement modeling
 
  D.  Application modeling
 
 
 

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  第71题    2025年下半年  
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The analysis phase answers the questions of who will use the system, what the system will do, and where and when it will..
  第71题    2022年上半年  
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Requirements validation is the process of checking that requirements actually define the system that the customer really..
  第73题    2018年上半年  
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During the systems analysis phase, greater user involvement usually results in better communication, faster development ..
   知识点讲解    
   · SD
 
       SD
        SD卡(Secure Digital Memory Card)是一种基于半导体快闪记忆器的新一代记忆设备。SD卡由日本松下、东芝及美国SanDisk公司于1999年8月共同开发研制。大小犹如一张邮票的SD记忆卡,重量只有2g,但却拥有高记忆容量、快速数据传输率、极大的移动灵活性以及很好的安全性。
        SD卡在24mm×32mm×2.1mm的体积内结合了SanDisk快闪记忆卡控制与MLC(Multilevel Cell)技术和Toshiba(东芝)0.16μ及0.13μ的NAND技术,通过9针的接口界面与专门的驱动器相连接,不需要额外的电源来保持其上记忆的信息。而且它是一体化固体介质,没有任何移动部分,所以不用担心机械运动的损坏。
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