Tutorial 2.4

2.0 Hardware & Software Tutorial 18 -
2.4 Input and Output Devices Tutorial 24

2.0 Hardware and Software
2.4 Input and Output Devices

1. Input device is a hardware component that allows users to enter data and data
instructions.
Identify the input/output devices based on the given description.

(a) This input device is used to read 2D barcode.
Bar Code Reader (Scanning Devices)

(b) The librarian will use this input device to validate your matric card when you want
to borrow a book from the library.
Bar Code Reader (Scanning Devices)

(c) Capture data from a source document which is the original form of data.
Scanner

(d) Produce text and graphics on a physical medium.
Monitor (Display Device)

2. Video input is the process of capturing full-motion images and storing them on a
computer’s storage medium. Give two (2) examples of video input device.
Digital Video (DV) Camera & Web Cam

3. What is output in the context of information processing cycle?
Data that has been processed into a useful form

4. What is pointing device?
Pointing devices is an input device that allows a user to control a pointer on the screen

(a) Identify and explain four (4) types of pointing devices.

Type Explanation
(i) Mouse A mouse is a pointing device that fits under the palm of
your hand comfortably
(ii) Trackball A trackball is a stationary pointing device with a ball on
its top or side
(iii) Touchpad A touchpad is a small, flat, rectangular pointing device
that is sensitive to pressure and motion
(iv) Pointing Stick A pointing stick is a pressure-sensitive pointing device
shaped like a pencil eraser that is positioned between
keys on a keyboard

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5. Munirah, a lecturer, wants to prepare a lecture presentation. Identify the device that can
be used to perform each of the following functions.
(a) To capture pictures and text directly from a text book.

Scanner

(b) To record voice to be used in the presentation.

Microphone

6. Name three (3) input devices to assist a control system that verifies access to a building.
 Fingerprint reader
 Hand geometry system
 Face recognition system
 Voice verification system
 Iris recognition system

7. What do you understand by RFID technology? Give one (1) application of it.
(a) RFID Technology
A technology that uses radio signals to communicate with a tag placed in or attached
to an object, an animal or a person.

Example of application:

• Tracking times of runners in a marathon
• Tracking location of soldiers
• Employee wardrobes
• Airline baggage
• Checking lift tickets of skiers
• Managing inventory
• Gauging pressure and temperature of tires
• Checking out library books
• Tracking toll payments

8. Input and output are the connection between information processing system and the

outside world.

(a) Identify one (1) suitable input device for the following scenarios.

Scenario Input Device
 Adam wants to find information at the airport’s kiosk Touch-Screen

booth. Microphone
 Ali needs to record his voice presentation. Optical Reader

 Siti decides to know the price of an item at the Scanner
supermarket.

 Kumar wants to make a digital copy of his birth certificate.

9. List two (2) devices that can be both input and output devices.
Smartphone, Tablet

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2.4 Input and Output Devices Tutorial 24

10. Yazid is a professional singer at Merpati Sdn. Bhd. Production Company. He plans to
record his song into a computer and produce a video clip for the song.
(a) Give two (2) example of input devices which can be used by Yazid and describe its
function.

Example of Input Device Function
i) Microphone
 input device that process by entering input by
ii) Digital Video Camera speaking into a microphone.

 captures full-motion images & stores them on
a computer’s storage medium

(b) Give two (2) examples of output devices which can be used by Yazid and describe its

function.

Example of Output Device Function

i) speaker  Used to convey audio output such as music,

voice, sound effects or other sound

ii) Monitor  conveys text, graphics, and video information.

(c) List three (3) examples of physical storage which can be used by Yazid to store his
files.
Hard drive, USB Flash Drive, Compact Disc (CD), Digital Versatile Disc (DVD)

(d) While editing the video clip, Yazid found out that his computer is getting slower and
does not perform well. Recommend three (3) appropriate types of utility program
that could rectify his problem and describe its function.

Types of Utility Program Function

(i) Disk Cleanup  A tool that searches for and removes unnecessary
files (Deleted files, Unused program files,
Temporary internet files)

(ii) Antivirus program  Protects a computer against viruses by identifying &
removing any computer viruses from the memory,
storage media, or incoming files.

(iii) Spyware remover  Detects and deletes spyware and other similar
programs

11. Assume that you are queuing at the payment counter of a supermarket. Identify two (2)

input devices and two (2) output devices that are normally used at the point of sales
counter.

Input Devices Output Devices

Barcode reader Printer

Keyboard monitor

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2.4 Input and Output Devices Tutorial 24

12. Identify the type of input devices based on the given description.

Description Input Device
(a) Human characteristics are used for access control Biometric Reader

or to authorize electronics financial transaction. Magnetic-Ink Character
Recognition Reader(MICR)
(b) Read the special magnetic characters to sort or
process cheques. It is also used primarily for Optical Reader
banking.
Radio Frequency
(c) Read optical characters that are designed to be Identification Reader
identifiable by humans as well.
(RFID)
(d) Contain tiny chips and radio antennas. It is also
attached to objects for identification purposes.

13. Identify the following output devices.

(a) This is an output device that visually conveys text, graphics, and video information.
Display Devices

(b) This is an output device that produces text and graphics on a physical medium, such
as paper. Printer

(c) This is an output device that projects the text and images displaying on a computer
on a large screen so that an audience can see the image clearly. Data Projector

(d) This is an output device which is a touch sensitive device, resembling a dry-ease
board that displays the image on a connected computer screen, usually via a
projector. Interactive Whiteboard

14. Suggest one (1) input device for each of the following scenario. Input Device
Optical Reader
Scenario
(a) Ahmad wants to calculate the total number of human- Webcam

marked data for his final exam paper
(b) Lim wants to communicate with his parents via Skype

video.

15. Bar Code Reader and Radio Frequency Identification (RFID) are two examples of input

devices. Distinguish these two input devices and propose one (1) place where each of

this input devices can be used.

Bar Code Reader RFID

Difference An optical reader that uses laser A technology that uses radio signals
beams to read bar codes by to communicate with a tag placed in
using lights patterns that pass or attached to an object, an animal or
through the bar code lines a person.

Place Used Grocery stores, factory Toll, Office
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2.4 Input and Output Devices Tutorial 24

16. Gopal is required to prepare 10 tender documents which includes a company profile.

The printed profile must contain extensive information, high quality of colorful photos

and graphs that must be printed in 30 copies of 50 pages within two days.

Determine three (3) criteria to meet his requirement when buying a printer.

i. High Resolution: measured by dpi (dots per inch)
ii. Print Speed: measured by ppm (pages per minute) / Capacity of Printing
iii. High Image quality (the higher dpi, the smaller drops of inch) / Quality of printing

17. Computers can only interact with the world using input and output devices.

(a) Give three (3) devices that utilize touch input.

Smartphone, Tablet, Interactive Whiteboard, Kiosk monitor screen, Digital Camera,
Smartphone, Navigation System
(b) Identify and state the device based on the given function.

Function Device

This device uses light source to read characters, marks and Optical device,
codes and then converts them into digital data that a OMR, OCR
computer can process
Pen Input, Stylus
Allow the users to write, draw or mark selections on a flat pen, digital pen
surface.

Users are able to create hardcopy documents on variety of Printers
papers.

18. An assistive technology is a technology that helps disable person to complete tasks

much easier.

Suggest and describe two (2) assistive technologies that can help disable people.

Assistive Technology Description
Mouth-Controlled Mouse
A joystick, where the user bites the "stick" and
Speech Recognition Software moves his/her mouth to control the mouse on the
screen.

A computer access option that allows the user to
dictate text into a computer or navigate the
computer using his/her voice to produce words
or dedicated voice commands.

19. Besides using bar code, many high security facilities have used this technology for years
when it comes to ensure only authorized personal has access to a protected
establishment, based on their physical traits.

(a) Identify the most suitable type of input device.
Biometric Reader

(b) Describe the function of input device mentioned above.
An input device that uses technology of authenticating a person’s identity by
verifying a personal characteristic.

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2.4 Input and Output Devices Tutorial 24

(c) Give one (1) example of input device mentioned above.
 Fingerprint reader
 Hand geometry system
 Face recognition system
 Voice verification system
 Signature verification system
 Iris recognition system

20. A virtual reality headset is a head-mounted device that provides virtual reality for the
wearer.
(a) State two (2) output devices that can be found in the virtual reality headset.
Headphones and Smartphone display

(b) Describe one (1) output device mentioned above.

Headphones are audio output that cover or a re placed outside the ear. It used to
convey audio output such as music, voice, sound effects or other sound.

21. More than 28 million people in certain countries are suffering from hearing loss. 80% of
them have permanent and irreversible hearing damage.
Suggest two (2) devices that can help these people.
i. Cochlear Implant
ii. Hearing Aid

iii. Communication Access Realtime Translation (CART)
iv. Realtime Captioning
v. Alerting devices
vi. Frequency Modulation systems

22. Given the following hardware devices, determine whether they belong to input devices,
output devices, processor or storage devices.

ARM v8 based instructions set in a smartphone Processor
4 GB micro SD card Storage Device
Super AMOLED Touchscreen Input-Output Device
Fingerprint Sensor Input Device
LaserJet Network Printer. Output Device

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