1. Input/Output & Storage*
07/16/96
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

2. Input Devices: Giving Commands*
Input Devices: Giving Commands
07/16/96
Input
Data or instructions entered into a computer
Input device
Hardware that gives users the ability to enter data and instructions into the computer’s random access memory (RAM)
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

3. Input Devices: Giving Commands*
Input Devices: Giving Commands
07/16/96
Input device (con’t.)
Keyboard
Most common input device—enables data and instruction entry through the use of a variety of keys
Enhanced keyboards—additional keys, such as media control buttons to adjust speaker volume, or Internet control buttons that open , a browser, or a search window with a single keystroke
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

4. Input Devices: Giving Commands*
Input Devices: Giving Commands
07/16/96
Wireless keyboards
Connect to the computer through infrared (IR), radio frequency (RF), or Bluetooth connections
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

5. Input Devices: Giving Commands*
Input Devices: Giving Commands
07/16/96
Keyboards
Connect with:
Universal Serial Bus (USB) connector
PS/2 cable
Infrared
Radio frequency
Bluetooth
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

6. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Output devices
Enable users to see, hear, or feel the end result of processing operations
The two most popular output devices
Monitors (also called displays)
Printers
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

7. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Monitors
Display a temporary copy (soft copy) of processed data
Types of monitors include:
Cathode-ray tube (CRT)—legacy technology
Liquid crystal display (LCD)
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

8. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Monitors (con’t.)
LCD (flat-panel) displays:
Have a thin profile
Are used with newer desktops and notebooks
Have largely replaced CRT monitors
May accommodate high-definition video
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

9. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Printers
Supply a hard copy of output displayed on a computer’s monitor
Types include:
Inkjet
Laser
Dot-matrix
Thermal-transfer (sometimes called dye sublimation printers)
Photo
Plotters
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

10. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Printers (con’t.)
Inkjet (nonimpact)—popular with home users
Provide excellent images—made up of small dots
Advantages:
Inexpensive
Generate professional color output
Disadvantages:
Relatively slow
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

11. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Printers (con’t.)
Laser (nonimpact)
Use electrostatic reproductive technology to produce high-quality output
Advantages:
High-resolution
Print faster than inkjet printers
Black-and-white printing costs less per page than inkjet printing
Disadvantages
Color laser printers more expensive
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

12. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Printers (con’t.)
Photo
Uses special ink and paper
Often are inkjet printers
Prints directly from a digital camera or memory card
Plotters
Produce images through moving ink pens
Used for making oversized prints (i.e., maps, charts, blueprints)
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

13. Output Devices: Engaging Our Senses*
Output Devices: Engaging Our Senses
07/16/96
Other output devices include:
Speakers
LCD projectors
DLP (digital light-processing) projectors
Multifunction devices
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

14. Storage: Holding Data for Future Use*
Storage: Holding Data for Future Use
07/16/96
Storage
Process of saving software and data
Also called mass storage, auxiliary storage, or secondary storage
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *

15. Storage: Holding Data for Future Use*
Storage: Holding Data for Future Use
07/16/96
Storage devices
Hardware that contains the tools to place data on the recording media
Recording media—hold data
Hard disks
Floppy disks
Flash memory
CDs and DVDs
Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall *