计算机介绍英文版知识分享.ppt

Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Click to edit Master title style,计算机介绍英文版,A World of Computers,What is,computer literacy,?,p.5 Fig.1-1,Next,Knowledge and understanding of computers and their uses,Computers are everywhere,2,How is a,computer,defined?,What Is a Computer?,p.6,Produces and stores results,Next,Electronic device operating under the control of instructions stored in its own memory,Processes data into,information,Data that is organized,meaningful,and useful,Accepts,data,Raw facts,figures,and symbols,3,What Is a Computer?,What is the,information,processing cycle,?,p.6 Fig.1-2,Next,Input,Process,Output,Storage,Communication,4,The Components of a Computer,What is an,input device,?,p.7 Fig.1-3,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Input Devices below Chapter 1,Hardware,used,to enter,data,and instructions,Next,5,The Components of a Computer,What is an,output device,?,p.8 Fig.1-3,Hardware that,conveys information to a user,Next,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Output Devices below Chapter 1,6,The Components of a Computer,What is the,system unit,?,p.8 Fig.1-3,Next,Box-like case,containing,electronic,components,used to process,data,7,The Components of a Computer,What are two main components on the motherboard?,p.8,Central Processing Unit(CPU),Also called a,processor,Carries out instructions that tell computer what to do,NextMemory,Temporary holding place for data and instructions,8,The Components of a Computer,What is,storage,?,p.8,Storage media,Physical material on which data,instructions,and information are stored,Storage device,Records and retrieves items to and from a storage medium,Next,Holds data,instructions,and information for future use,9,The Components of a Computer,What is,storage media,?,p.8,Digitalcameras,Handheldcomputers,Portable,thin memory cards used in:,Next,10,The Components of a Computer,What is a floppy disk?,p.8 Fig.1-4,Next,Thin,circular,flexible disk enclosed in rigid plastic shell,A USB flash drive is portable,and has much greater storage capacity,11,The Components of a Computer,What is a flash drive?,p.9 Fig.1-5,Next,Provides much greater storage capacity than a floppy disk or Zip,disk,Small and lightweight enough to be transported on a keychain or in a pocket,12,The Components of a Computer,What is a flash drive?,Next,Product,Capacity(MB),Interface*,Thumbdrive Touch(),8/16/32/64/128/256/512/1024,USB 1.1,Data Traveler 2.0 Hi-Speed,(),128/256/512/1024,USB 2.0,Handy Steno HT202(),32/64/128/256/512/1024,USB 2.0,Audio Steno BP300(),64/128,USB 1.1,*1.1=12Mbps,2.0=480Mbps,13,The Components of a Computer,What is a hard disk?,p.9 Fig.1-6,Next,Provides much greater storage capacity than a floppy disk or USB flash drive,Housed inside the system unit,14,The Components of a Computer,What is a compact disc?,p.9 Fig.1-7,Next,Flat,round,portable metal disc,CD-ROM,CD-RW,DVD-ROM,DVD+RW15,Accuracy,Communications,Why Is a Computer So Powerful?,p.10,What makes a computer powerful?,Storage,ReliabilityandConsistency,Next,Speed,16,One type is a modem,Networks and the Internet,What is a,network,?,p.10,Enables a connection between computers,Cables,Cellular radio,Telephone lines,Satellites,Next,Communications Media,Communications Device,Collection of computers and devices connected together,17,To share,Networks and the Internet,What are the reasons to network?,p.10,Resources,Hardware devices,Software programs,Data,To save time and money,Information,Next,18,Networks and the InternetWhat is a server?,p.10 Fig.1-8,Next,Manages the resources on a network,A client accesses the resources on the server,19,Networks and the Internet,What is the,Internet,?,p.11 Fig.1-9,Next,Worldwide collection of networks that connects millions of computers,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Internetbelow Chapter 1,20,Networks and the Internet,p.12 Fig.1-10,Why do users access the Internet?,Information,Shopping,Banking and Investing,Classes,Entertainment,Next,Communications,21,Networks and the Internet,What is the,Web,?,p.13,A,Web site,is a collection of related Web pages,A,Web page,contains text,graphics,sound,video,and links to other Web pages,You can share information by creating Web pages or posting photos on a photo community,Next,Billions of documents,called,Web pages,available to anyone connected to the Internet,22,Computer SoftwareHow do you install a,software,program?,p.14 Fig.1-13,Next,A,program,is a series of instructions that tells the computer what to do,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Computer Programs below Chapter 1,23,Computer Software,What is,system software,?,p.15,Operating System(OS),is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software,Utility Programs,allow the user to perform maintenance-type tasks usually related to managing a computer,its devices or its programs,Next,Programs that control the operations of the computer and its devices,24,Computer Software,What is,application software,?,p.16 Fig.1-15,Next,Presentation Graphics,Spreadsheet,Database,Word Processing,Programs that perform specific tasks for users,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Application Software below Chapter 1,25,Computer Software,What is a,programmer,?,p.17 Fig.1-16,Next,Someone who developsapplication or system software,Programmer writesinstructions todirect computer toprocess data intoinformation,Javascript program,Resulting Internet application,26,Categories of Computers,p.18,Next,Personal computers(desktop),Mobile computersand mobile devices,Midrange servers,Mainframe computers,What are the categories of computers?,Supercomputers,27,Computer Software,What is a,graphical user interface(GUI),?,p.14 Fig.1-14,Next,Allows you to interact with the software using graphics and icons,Controls how you enter data and how the screen displays information,28,Personal Computers,What are the two most popular series of,personal computers,?,p.19 Figs.1-18,1-19,Next,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Personal Computers below Chapter 1,PC and compatibles use the Windows operating system,Apple Macintosh uses the Macintosh operating system(Mac OS),29,Personal Computers,What is a,desktop computer,?,p.19 Fig.1-18,Next,Designed so all of the components fit on or under a desk or table,30,Personal Computers,What is a,notebook computer,?,p.20 Fig.1-20,Next,Portable,small enough to fit on your lap,Also called a,laptop computer,Generally more expensive than a desktop computer,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Notebook Computers below Chapter 1,31,Handheld Computers,What is a,tablet PC,?,p.20 Fig.1-21,Next,Especially useful for taking notes,Resembles a letter-sized slate,Allows you to write on the screen using a digital pen,32,Handheld Computers,What are,Web-enabled,handheld computers?,p.21 Fig.1-23,Allow you to check e-mail and access the Internet,Next,Web-enabled telephone is a“,smart phone,”,33,Handheld Computers,What is a,handheld computer,?,p.21,Next,Used by mobile employees such as meter readers and delivery people,Small enough to fit in your hand,34,Handheld Computers,What is a,personal digital assistant(PDA),?,p.21 Fig.1-23,Next,Provides personal organizer functions,Calendar,Appointment book,Address book,Calculator,Notepad,Click to view video,35,Servers,What types of servers are there?,p.22 and 23 Figs.1-25,1-27,Midrange server,Powerful,large computer that supports up to a few thousand computers,Mainframe,Very powerful,expensive computer that supports thousands of computers,Supercomputer,The fastest,most powerful,most expensive computer.Used for applications requiring complex mathematical calculations,Next,36,Elements of an Information System,What are information system elements?,p.24 Fig.1-28,Next,People,Procedures,Data,Software,Hardware,37,Examples of Computer Usage,p.25 Fig.1-29,What are five categories of computer users?,Next,38,Examples of Computer Usage,What software is available for a,home user,?,p.26 Fig.1-30,Next,39,Examples of Computer Usage,p.28 Fig.1-33,Local area network(LAN),Productivity software,Specialty software,Web usage,E-mail,Next,What software is available for a,small office/home office,(SOHO)user?,40,Hardware,Examples of Computer Usage,What is available for a,mobile user,?,p.29 Fig.1-35,Software,Productivity,Presentation,Personal information manager,Next,41,Examples of Computer Usage,What are the needs of the,large business user,?,p.30 Figs.1-37,1-40,Next,Web access,Public kiosk,Telecommuting,Network,Productivity software,Scheduling,Click to view Web Link,click Chapter 1,Click Web Linkfrom left navigation,then click Enterprise Computing below Chapter 1,42,Examples of Computer Usage,What are the needs of a,power user,?,p.32 Fig.1-41,Next,Speed and large amounts of storage,Types of power users,Engineers,Architects,Desktop publishers,Graphic artists,43,Computer Applications in Society,What are some examples of computer applications in society?,p.33 Figs.1-42,1-49,Next,Education,Finance,Government,Healthcare,Science,Publishing,Travel,Industry,Click to view video,44,Summary of Introduction to Computers,The importance of computer literacy,The computer and its components,Why is a computer so powerful?,What is a network?,The Internet and the World Wide Web,Installing and running a program,Types of software,Categories of computers,Elements of an information system,Types of computer users,Computer applications in society,Chapter 1 Complete,45,此课件下载可自行编辑修改，仅供参考！感谢您的支持，我们努力做得更好！谢谢,