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Copyright 2003 by Prentice Hall - PowerPoint PPT Presentation


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Computers: Tools for an Information Age Chapter 5 Input and Output: The User Connection Objectives Describe the user relationship with computer input and output Explain how data is input into a computer system and differentiate among various input equipment

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computers tools for an information age

Computers:Tools for an Information Age

Chapter 5

Input and Output: The User Connection

Copyright © 2003 by Prentice Hall

objectives
Objectives
  • Describe the user relationship with computer input and output
  • Explain how data is input into a computer system and differentiate among various input equipment
  • Describe how a monitor works and the characteristics that determine quality
  • List and describe the different methods of computer output

Copyright © 2003 by Prentice Hall

objectives3
Objectives
  • Differentiate among different kinds of printers
  • Explain the function of a computer terminal and describe the types of terminals
  • Describe the ethical considerations involved in handling computer data

Copyright © 2003 by Prentice Hall

how users see input and output
How Users See Input and Output
  • Users submit data (input) to the computer to get processed information (output)
    • Output can be instant reaction to input
    • Also can be separated by time, distance, or both

Copyright © 2003 by Prentice Hall

input getting data from the user to the computer
Input: Getting Data from the User to the Computer
  • Keyboard
  • Pointing devices
  • Source data automation

Copyright © 2003 by Prentice Hall

output information for the user
Output: Information for the User
  • Computer screens
  • Printers
  • Voice output
  • Music output
  • Microform

Copyright © 2003 by Prentice Hall

terminals
Terminals
  • Combine input and output capabilities
  • Dumb terminal
    • Keyboard for input and monitor for output
    • No processing capability
  • Intelligent terminal
    • Has limited memory and a processor
  • Point-of-sale (POS) terminal
    • Captures retail sales data when transaction takes place

Copyright © 2003 by Prentice Hall

computer graphics
Computer Graphics
  • Business graphics
  • Video graphics
  • Computer-aided design/computer-aided manufacturing (CAD/CAM)

Copyright © 2003 by Prentice Hall

ethics and data
Ethics and Data
  • Once data is in computer, there are many ways it can be used
  • Ethical issues to ponder
    • Is it ethical to use a computer to alter photographs?
    • Is it ethical to erase e-mail messages that may be of interest to a party in a lawsuit?
    • Is it ethical to use someone else’s data for your purposes?

Copyright © 2003 by Prentice Hall

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