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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

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Computers:Tools for an Information Age

Chapter 5

Input and Output: The User Connection

Copyright © 2003 by Prentice Hall


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


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

  • 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

  • Keyboard

  • Pointing devices

  • Source data automation

Copyright © 2003 by Prentice Hall


Output: Information for the User

  • Computer screens

  • Printers

  • Voice output

  • Music output

  • Microform

Copyright © 2003 by Prentice Hall


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

  • Business graphics

  • Video graphics

  • Computer-aided design/computer-aided manufacturing (CAD/CAM)

Copyright © 2003 by Prentice Hall


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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