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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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