Chapter 6 - Output
Presented by:
Nick Cristella
Megan McGee
Dena LoCastro
September 30, 2004
Overview of the Presentation
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Introduction to Output
Display Devices
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Cathode Ray Tube Monitors
Flat Panel
Printers
Audio Output Devices
Other Output Devices
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Introduction to Output
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What is Output?
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Categories of Output
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Output: the result of data being processed into something
usable.
Text
Graphics
Audio
Video
Additional Vocabulary
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Text
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Text: documents are composed primarily of
words and numbers.
Examples of text documents:
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Memos
Letters
Reports
Advertisements
Newspaper
Books
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Graphics
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Graphics: added to a
document to assist in
understanding and to
enhance the
aesthetics.
Examples:
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Clip Art
Photographs
Charts
Animation
Audio
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Audio: sounds or
music used to
enhance a
presentation or
another document.
Examples:
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Games
Music
Research Programs
Websites
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Video
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Video: the mixing of
sound and moving
picture to assist in
understanding.
Examples
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Video Games
Movies
News Clips
Websites
Additional Vocabulary
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Output Device: any item that conveys information to
one or more persons.
Examples:
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Television
Speakers
Computer Monitor
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Display Devices
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Introduction to Display Devices
CRT Monitors
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Quality
Video Cards
Flat Panel Displays
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Technology
Video Cards
Gas Plasma Monitors
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Television
Introduction to Display Devices
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Display Device: a method of visually
presenting text, graphics, and video.
Soft Copy: items on the display device that
are only there temporarily.
Monitor: a plastic or metal casing that
protects the display device
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Monochrome: displays in one color
Gray Scaling: displays in black, white, and grays.
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CRT Monitors
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CRT: Cathode Ray Tube
Similar to a standard television, mainly because it
uses the same CRT technology.
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Video Cards
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Video Card: (a.k.a:
graphics card) changes
digital computer output
into an analog signal to
send it to the CRT
monitors.
Bit depth: number of bits
the card uses to store
information concerning
each pixel.
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Flat Panel Displays
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LCD Monitor: a monitor that uses a liquid
crystal display instead of the cathode ray
tube.
It takes up much less desk space then a
CRT monitor.
Nit: unit of visible light that is equal to one
candela per square meter.
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Candela: standard unit of light intensity.
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Video Cards and LCD Monitors
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DVI (Digital Video Interface): Where the
LCD monitor plugs into the computer.
S-Video Port: where one can connect
outside devices such as a TV or DVD
player.
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Gas Plasma and HDTV
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Gas Plasma: display
using gas plasma, which
uses a layer of gas for
the liquid crystal.
HDTV: Uses digital
broadcasting signals,
using digital sound, and
supporting a wide
screen.
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Interactive TV: a twoway communications
system where users can
interact with the
programming.
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Games
Voting
Printers
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Printer: an output device that puts visuals on a
physical medium, such as paper.
There are two ways to orient a document on a
page
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Portrait: taller than it is wide
Landscape: wider than it is tall
There are many different types of printers
available today:
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Impact, Dot-Matrix, Line, Non-impact, Ink-Jet, Photo,
Laser, Thermal, Mobile, Label, Large-Format, and
Wireless.
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Impact and Nonimpact Printers
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Impact: forms visuals on a
document by actually
striking a mechanism
against the ink ribbon that
hits the paper.
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Can be very noisy
Produces near letter
quality (NLQ) output, which
is slightly less than what is
acceptable for business
letters.
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Nonimpact: forms visuals,
but never actually touches
the paper.
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They either spray ink, or
use heat and pressure.
Most printers are
nonimpact in present day.
Types of Impact Printers
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Dot-Matrix: produces
images by striking tiny
wire pins against an
ink ribbon.
Line: a high speed
impact printer that
prints one line at a
time.
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Ink-Jet Printers
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Ink-Jet: a nonimpact
printer that prints by
spraying tiny drops of
liquid onto the
document.
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Prints letter quality (LQ)
Printer resolution is
measured in dpi (dots
per square inch.
Bubble Jet: Ink-jet
printer that sprays the
ink through tiny nozzles.
Photo Printers
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Photo Printer: a color printer that produces pictures that
are on the same quality level as lab photos.
Can print any size and can even be printed on paper that
feels like a photograph.
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Laser Printers
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Laser Printer: high speed,
high quality, nonimpact.
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Uses software that allows
them to interpret page
description language
(PDL).
PDL: tells the printer how
to lay out a page.
Prints using a laser and a
powdered ink, or toner.
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Thermal Printers
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Thermal Printer: creates images by
pressing hot pins against heat sensitive
paper.
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Thermal wax-transfer: creates images by melting
wax onto heat sensitive paper.
Dye Sublimation: uses heat to transfer colored
dye to specially coated paper.
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Mobile and Label Printers
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Mobile: a small printer that
is battery powered and
can accompany a laptop
computer.
Label: small printer that
prints on an adhesive
paper.
Postage: a label printer
that has a digital scale to
print postage.
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Plotters and Large-Format Printers
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Plotter: printers that
are made to print
specialty prints, such
as blueprints and
maps.
Large-format: Printers
that are large enough
to print high quality
posters, signs, etc.
Speakers and Headsets
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Audio output device: part
of a computer that
produces music and other
sounds.
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Speakers and headsets
are most common.
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Speakers have two parts
to them
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Woofer: enhances bass
Tweeter: enhances higher
noises
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Headsets allow for audio
where a speaker is not
practical, such as in a lab,
or in a crowded space.
Voice Output: when you
hear a person’s voice or
when the computer
verbally communicates to
the user.
Fax Machines
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Fax Machine (short for facsimile machine):
an output device that sends and receives
data over telephone lines.
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A fax is the document being transmitted.
This requires a fax modem, which allows a
computer to send or receive faxes.
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This can be an internal or external device on the
computer.
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Multifunction Peripherals
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Multifunction Peripheral: a single machine
that has the capabilities of a printer,
scanner, copy machine, and a fax machine.
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Sometimes referred to as all-in-one devices.
These are also used by small offices and home
offices, because they take up considerably less
space.
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Data Projectors
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Data projectors: a
device that uses the
image from the
computer screen and
projects it onto a
larger screen for an
audience.
There are two types.
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LCD: uses liquid
crystal display
technology.
DLP: digital light
projector. It uses tiny
mirrors to reflect
images clearly, even in
a well lit room.
Accessories
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Joysticks and wheels use force-feedback
technology to do their jobs. They uses the
movements of the user to send resistance and
simulate real-life experiences.
September 30, 2004
The End
Chapter 6 – Output
By
Megan McGee
Dena LoCastro
Nick Cristella
September 30, 2004