module 4 (2.3)peripherals

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ICTL For Secondary School - HARDWARE Module

KEMENTERIAN PELAJARAN MALAYSIAKEMENTERIAN PELAJARAN MALAYSIA

Self Access Learning ModuleSelf Access Learning Module

Computer HardwareComputer HardwareCOMPUTER PARTS & COMPONENTS

PERIPHERALS

PUSAT PERKEMBANGAN KURIKULUMKEMENTERIAN PELAJARAN MALAYSIA

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ICT Literacy forICT Literacy forSecondary SchoolSecondary SchoolProgrammeProgramme


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MODULE 4

PERIPHERALS

Curriculum Development CentreMinistry of Education Malaysia

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1. Name of Module: Computer Parts & Components - Peripherals

2. Learning Outcomes: The students should be able to:

a. state the definition of peripheral

b. identify different types of peripherals

c. state examples different types of peripherals

d. explain the functions of each peripheral

3. Knowledge and Skills:

a. identify main computer components

b. identify different types of peripherals

4. Module Summary: At the end of the module, students should be able to know thefunctions of each peripheral

This module contains 2 activities:

Activity 1: Definition of peripheral

Activity 2: Different types & functions of peripheral

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Activity 1: Definition & types of peripheral

a. PERIPHERAL DEVICE

Peripheral (Figure 1) are pieces ofcomputer hardwarethat are added to a host computer, i.e. any hardware

except the computer, in order to expand its abilities. Mostof those devices are optional in nature.

External hardware devices attached to the computer arecalled peripheral equipments.

There are three types of peripheral:

Input devices

Output devices

Storage devices

b. INPUT DEVICES

Input devices are any electronic device that are connected to a computer and producesinput signals. Figure 2 shows some examples of computer input devices

c. OUTPUT DEVICES

Output devices are the result of data processing activity when it is presented externally tothe system. It is a hardware that is capable of delivering or showing information to one ormore users. The output from a computer can be in printed or displayed form (see Figure 3).

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Figure 1 Examples of peripherals

Figure 2 Examples of Input Dev

Figure 3 Examples of Output Devices
http://en.wikipedia.org/wiki/Computer_hardwarehttp://en.wikipedia.org/wiki/Computerhttp://en.wikipedia.org/wiki/Computer_hardwarehttp://en.wikipedia.org/wiki/Computer


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d. STORAGE DEVICES

Computer storage is the holding of data in an electromagnetic form, for access by acomputer processor. Information and documents are stored in a computer storage sothat it can be retrieved whenever they are needed later on. Figure 4 are examples ofstorage

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Figure 4 Examples of Storage Devices

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Diskettes & CDs Thumb DriversHard Disk


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Activity 2: Different types & the functions of peripheral

a. Printers

A printer is an output device to print text or graphics on mediums such as paper,transparency film or even cloths.

A photo printer is a colour printer that produces photo-qualitypictures.

Figure 5 Examples of printers

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b. Scanners

A scanneris a device that analyzes images, printed text, handwriting, or objects (such asan ornament) and changes it into a digital image.

The flatbed scanneris the most common in offices.Hand-held scanners, are popular but no longer used due tothe difficulty in obtaining high-quality image.

The bar code scannerconsists of a scanner, a decoder, and a cablethat interfaces between the decoder to the computer or terminal. Thescanner's function is to scan the bar code symbol and provide anelectrical output to the computer that corresponds to the bars

and spaces of the bar code.

The handheld scanners were extremely popular as they werecheap and relatively simple. However, the handheld scanner is notparticularly accurate, usually has a maximum resolution of 600 dpiand can be quite difficult to use. Their main drawback is the limitedscanning area and, whilst they are handy for scanning small imagesand narrow columns of text.

The Sheet Fed Scannerdesigned to scan individual sheets ofpaper automatically in much the same way as a fax machine.Their main advantage is that they have a small footprint, but this isfrequently negated by the need to output the scanned paperdirectly onto the desktop.

( source http://en.wikipedia.org/wiki/Image_scanner)

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c. LCD Projector

LCD projectoris a type of video projector for displaying video, images or computer dataon a screen or other flat surface such as on to a wall or screen. It is a modern slide

projector.

d. Digital cameras

Digital cameras are electronic devices used to capture and store photographs digitally.They use memory card instead of photographic film like conventional cameras or recordingimages in an analog format to magnetic tape like many video cameras.

Modern compact digital cameras are typically multifunctional, with some devices capable ofrecording sound and video as well as photographs.

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Digital Camera

Figure 7 - LCD ProjectorF


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e. External CD Drives

The external DVD/CD-RW combo drive functions as a DVD player, a CD-RW drive anda CD-ROM drive. This allows you to install computer applications, files, music andmovies on CD. It is easy to be carried around.

f. External Storages

External storage is an alternative storage. It is very useful to store programs and datafor future use. The storage is required for two reasons:

1. The working memory of the CPU is limited in size and cannot always hold theamount of data required.

2. Data and programmes in storage do not disappear when the power is turned off.

External Storage

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External CD DrivesE

Hard DiskH Thumb DriveT DisketteD CD-RomC

Zip DiskZ Flash MemoryF Memory StickMSmart Chip


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EXERCISE 1

Label the figures shown below and write your answers on the lines given. You may usethe words given below to help you.

CD or DVD

External hard disk

Tape drive

Miniature hard disk

Zip disk

Flash memory card

USB Flash drive

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1. _________ 2. _________

3. __________ 4. _________


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5. _________ 6. _________

7. _________


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Exercise 2

Look at the pictures given. Then, name the devices and state their functions.

Devices Name of devices Functions

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Reference

Cashman, S. (2006) Discovering Computers 2006. USA : Thomson Course Technology.

Ibrahim Ahmad, Mohd Hafiz et al (2007) Information and Communication Technology (ICT)

Based on SPM Syllabus. Selangor: Venton Publishing (M) Sdn Bhd.

NCC Education (2002) Computer Studies, Computer Ace. Sri Lanka : Computer Pioneers.

Basic Computing (2003) by TMEdu Tech (M) Sdn Bhd

http://www.wikipedia.org

http://images.search.yahoo.com

http://www.google.com.my

CD courseware ICT

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module 4 (2.3)peripherals

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