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Chapter 6: Output. Slides Created by Kevin McHale. The Four Categories of Output. Output is data that has been processed into a useful device Four Categories Text Graphics Audio Video. CRT Monitors .

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chapter 6 output

Chapter 6: Output

Slides Created by

Kevin McHale

the four categories of output
The Four Categories of Output
  • Output is data that has been processed into a useful device
  • Four Categories
    • Text
    • Graphics
    • Audio
    • Video
crt monitors
CRT Monitors
  • Desktop monitors that are similar to televisions because they contain Cathode Ray Tubes (CRT)
  • Available in a variety of sizes
    • Most common range from 15 to 22 inches
  • Use electron beams to produce images
quality of crt monitor
Quality of CRT Monitor
  • Three factors affect the monitor’s quality
    • Resolution
    • Dot Pitch (Pixel Pitch)
    • Refresh Rate
graphics cards
Graphics Cards
  • Converts digital output from the computer into an analog video signal
  • Sends the signal through a cable to the CRT monitor
  • Monitor displays the

output on the screen

  • The number of colors a graphics card displays is determined by its bit depth
flat panel display
Flat Panel Display
  • A flat panel display is a display with a shallow depth that does not use CRT technology
  • Types of flat panel displays
    • Flat panel monitors
    • LCD displays
    • Gas Plasma displays
    • HDTV displays
flat panel displays
Flat Panel Displays
  • A flat panel monitor is a desktop monitor that uses a liquid crystal display instead of a cathode-ray tube
  • A liquid crystal display (LCD) uses a liquid compound to present information on a screen
gas plasma displays
Gas Plasma Displays
  • A gas plasma display uses gas plasma technology
  • Substitutes a layer of gas for the liquid crystal material in a flat panel monitor
high definition television
High-Definition Television
  • HDTV is the most advanced form of digital television
    • Provides resolution up to 1920 x 1080 pixels
    • Works with digital broadcasting signals
    • Transmits digital sound
    • Supports wide screens
  • A printer is an output device that produces text and graphics on a physical medium
  • Two types of printers
    • Impact Printers
    • Nonimpact Printers
impact printers
Impact Printers
  • Impact printers form characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper
  • Types of Impact Printers
    • Dot-matrix printer
    • Line printer
nonimpact printers
Nonimpact Printers
  • Nonimpact printers form characters and graphics on a piece of paper without actually striking the paper
  • Types of nonimpact printers
    • Ink-jet printers
    • Laser printers
    • Photo printers
    • Large format printers
    • Thermal printers
    • Portable printers
    • Label and postage printers
    • Plotters
nonimpact printers13
Nonimpact Printers
  • An ink-jet printer forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper
  • A photo printer produces

photo-lab –quality pictures

nonimpact printers cont
Nonimpact Printers (Cont)
  • A laser printer is a high-speed, high-quality printer that creates images using a laser beam and powdered ink, called toner
  • A thermal printer generates images by pushing electronically

heated pins against heat

sensitive paper

nonimpact printers cont15
Nonimpact Printers (Cont)
  • A portable printer is a small, lightweight, battery-powered printer used for notebook computers
  • A label printer is a small

printer that prints on an

adhesive-type material

nonimpact printers cont16
Nonimpact Printers (Cont)
  • Plotters are sophisticated printers used to produce high-quality drawings
  • A large-format printer uses ink-jet technology on a large scale to create photo-

realistic-quality color prints

wireless printing technology
Wireless Printing Technology
  • Infrared Printing
    • A printer communicates with a device using infrared light waves
  • Bluetooth Printing
    • A device transmits output to a printer via radio waves
audio output devices
Audio Output Devices
  • Audio output devices are components of a computer that produce sound
  • Types of Audio Output Devices
    • Speakers
    • Headphones
  • A fax machine (facsimile machine) is a device that transmits and receives documents over telephone lines
    • A fax is a document sent or received
  • Fax modems allow you

to send and sometimes

receive electronic

documents as faxes

other output devices
Other Output Devices
  • Multifunction peripherals provide the functionality of a printer, scanner, copy machine, and a fax machine
  • Data projectors take the image

form a computer screen and project

it onto a larger screen for an audience

to view

output options
Output Options
  • Hearing impaired users can instruct programs to display words instead of sound
  • Visually impaired users can enlarge items on the screen and change settings to increase readability
  • Blind users can work with voice output instead of a monitor and Braille printers