Transcript Output Devices - Lagan College VLE

Output Devices
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This lesson will cover:
Commonly used output devices.
The differences in functionality between the main
varieties of printer.
Outputs that are audible or take the form of signals
which control devices.
Icons key:
For more detailed instructions, see the Getting Started presentation
Flash activity. These activities are not editable.
Teacher’s notes included in the Notes Page
Student task accompanies this slide
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Web addresses
Functional Skills check
Printable activity
Video
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Output devices
Output devices allow us to harness the processing power of
computers to produce the products we require.
Can you
think of
any output
devices
that have
an impact
on your
daily life?
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Output devices
When a computer has finished processing information, the
information needs to be output so that it can be used.
Monitors:
are screens or
Visual Display
Units (VDUs)
display the
effects of what
the user is
doing
can vary in size
and resolution.
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Sometimes we just
need to see the
information on
screen or on
paper. We can use
a monitor or
a printer.
Printers:
produce a paper
copy of the user’s
work: a ‘hard
copy’
come in three
main types:
laser, inkjet and
dot matrix.
Some businesses
also use plotters.
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Visual output – light
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Inkjet and laser printers
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Plotters
Plotters
Traditional plotters work by moving pens
over the surface of a page.
They were originally used for printing
technical drawings made up of lines.
Modern plotters tend to be big inkjet
printers that can print up to A0 in size.
They are expensive to buy and run, and they tend to
be used by architects, design firms and engineers.
This small plotter is fitted with a blade
rather than a pen. It can cut letters and
nets for 3D shapes like boxes. It is used
mostly for craft purposes.
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3D printing
Video courtesy of Boxford Ltd
3D printers are increasingly
being used in many
industries. They can produce
rapid prototypes or models
in very short periods of time.
Look at the following video.
What uses for 3D printers are
there in modern business?
3D printers are quite expensive, but if they become cheaper
they could become a common place household item.
What uses could 3D printers have in the home?
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Audible output – sound
Sometimes we need to hear information, so we use
audible output devices.
Speakers:
are used to output
sound, whether it is
music or voice
vary a lot in quality
are built into some
monitors.
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Headphones:
work in the same
way as speakers
can be cordless
are used for
personal listening.
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Signal output – control
Sometimes we
want to control
something, so we
send a signal to a
motor or to a
switch that is part
of another device,
like a robotic arm
or a computerized
sewing machine.
Can you think of any other output devices in
your home and school that are controlled by
sending electronic signals?
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What can you remember?
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