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Computer Science IGCSEPDF 29
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➤ Output Devices
● Output devices are hardware that receive data from a
computer and present it to the user in a clear form. They
allow the computer to display the results of processing.
Name of device
What does it do?
Where is it used?
Why is it used?
Actuator
Inkjet printer
Digital Light
Processing (DLP)
projector
Two-Dimensional
(2D) Scanner
Three-
Dimensional (3D)
Scanner
Projects images or video
onto a screen using light
and tiny mirrors.
Converts energy into
motion to perform tasks as
instructed by a computer
or control system.
Captures flat, 2D images of
documents or photos
Captures detailed 3D shapes
and dimensions of objects
Prints text and images onto Home
paper by spraying tiny
droplets of ink
Schools
Offices
Offices
Libraries
Schools
Cinemas
Classrooms
Large presentations
Make a robot's arm
move
Open a valve
Rotate a motor
Manufacturing
Design
Medical imaging
High-quality images
Low cost compared to
other types of printer
Necessary in any system
that requires movement
Digitises documents and
photos for storage,
editing, or sharing
Creates digital models of
objects for design,
analysis, or reproduction