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COMPUTER PARTS &
COMPONENTS
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PERIPHERALS
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What is
peripherals ??
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e students should be able to:
state the definition of peripheralidentify different types of peripheralsstate examples different types of peripheral
explain the functions of each peripheral
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1:Definition of Peripheral2: Different Types and Functions of Perip
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Definition & types of peripheral
Peripheral Device :External hardware devices attached to the
computer
are called peripheral devices
There are three types of peripheral devices :
Input devices
Output devices
Storage devices
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Input Devices
Input devices are any electronic device that are connected
to a computer and produces input signals.
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Input Device
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Output Devices
Output is the result of data processing activity when it
is presented externally to the system.
The output from a computer can be printed or
displayed form .
An output device is hardware that is capable of
delivering or showing information to one or more
users. An output device shows, prints and presents the
results of a computers work.
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Output Device
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Storage Devices
Information and documents are stored in a computerstorage so that it can be retrieved
whenever they are needed later on.
Computer storage is the holding of data in an
electromagnetic form for access by a
computer processor.
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Activity 2:
Different types and the functions of peripheral
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1. Printers
A printer is another example of an output device that can be
used to print text and graphics on mediums such as paper,transparency film or even cloths.
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Scanners
In computing, a scanner is a device that
analyzes images, printed text, handwriting, or
objects (such as an ornament) and converts it
into a digital image
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These are examples of scanners:
a. The flatbed scanner is the most common in offices.
b.Hand-held scanners are no longer used due to the difficulty in
obtaining a highquality image.
c. Digital camera scanners, that are based on the concept of
reprographic cameras.
d. Planetary scanners, which take photographs of books and
documents
e. 3D scanners, for producing three-dimensional models of objects,
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Hand-held scanners
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LCD Projector
LCD projector is a type of video projector for
displaying video, images or computer data on
a screen or other flat surface. It is a modern
equivalent of the slide projector or overhead
projector.
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Digital Cameras
Digital Cameras are electronic devices used to
capture and store photographs digitally, using the
memory card without using photographic film like
conventional cameras, orrecording images in an analog format to magnetic
tape like many video cameras.
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