COMPUTER STUDIES/

ICT
LESSON NOTE

J.S.S ONE

BY
ISAIAH SAMSON IKE-EWERIBRA

3RDTERM/COMPUTER STUDIES/JS 1 Page 1

 THE ROYAL INTERNATIONAL MISSIONARY GROUP OF SCHOOLS
MGBUOBA, PORT HARCOURT, RIVERS STATE
THIRD TERM 2024/2025 ACADEMIC SESSION SCHEME OF WORK

SCHEME OF WORK

WEEK TOPIC
1. REVISION
2. DEFINITION OF COMPUTER PROCESSING
3. IMPORTANCE OF COMPUTER AS A DATA PROCESSING TOOL.
4. THE DEVICE
5. TYPES OF COMPUTERS, USES AND APPLICATION OF COMPUTER
6. ADVANTAGES AND DISADVANTAGES OF COMPUTER
7. MID-TERM BREAK/CA
8. MASTERY OF THE KEYBOARD I & II (PRATICAL)
9. SCREEN POINTING DEVICES AND FUNDAMENTAL COMPUTER OPERATION
10. REVISION
11. EXAMINATION
12. CLOSING

LESSON NOTE FOR WEEK 2

SUBJECT COMPUTER STUDIES / ICT
CLASS JSS 1
SEX MIXED
AGE 11+ YEARS
PEROID
DURATION
TIME
DATE
NO: OF STUDENTS
TOPIC DEFINITION OF COMPUTER PROCESSING

Instructional Objective: By the end of the lesson, students should be able to:
1. Define computer processing.
2. State four main components of computer.
3. Mention four areas of the society where computer is used.
4. List four areas where computer is used in timing and control.

Reference Material: New Computer Studies for JSS 1 By J.O.E Otuka et al.
Instructional Material: Computer system

PRESENTATION
STEP 1: COMPUTER PROCESSING
Computer processing is an action or series of actions that a microprocessor, also known as a central processing
unit (CPU), in a computer performs when it receives information. The CPU is a type of electronic “brain” for
a computer system, and it executes a series of instructions that are fed to it by software programs installed
onto a computer’s hard drive and loaded into random access memory (RAM). Though modern computer
systems have become much faster and more complex than their earlier counterparts, they still perform the
same basic type of computer processing.

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There are four distinct states that processing goes through in order to produce meaningful output for any
program. These states are commonly referred to as (fetch, decode, execute and write back).

A computer has four main components: the central processing unit or CPU, the primary memory, input units
and output units. A system bus connects all the four components, passing and relaying information among
them.

Uses of Computer in communication

1. Computer gadgets such as mobile phones, palmtops can be used in communicating
2. The use of Video and Tele-conferencing in having meeting(s) with various members of staff or
board of directors in different locations, with the ability to view themselves.
3. Used in sending and receiving mails through the internet.
4. Used in multi- media communications.

Uses of Computer in Timing and Control

1. Traffic Control
2. Weather Control
3. Machine Control
4. Airplane Control

Uses of computer in information Processing and Management

 Marketing: individuals and companies also use the system to source for e-shopping, 0n-line
payment and delivery of ordered goods.
 Generation of payroll: Computers can be used to prepare and process payroll through
Microsoft Excel.
 Accounting and Banking: Computers are used to keep proper and effective records of both
goods and customer’s money.

Uses of computer in the society

 Health Care: Hospitals are comprehensively computerized in order to facilitate patient care at
competitive cost.
 Airlines: Airline reservation agent communicates with a centralized computer via a remote
terminal to update the database the moment a seat on any flight is filled or becomes available.
 Law: Lawyers use keywords to search through massive full text database containing more
cases than in any law office’s library.

General Evaluation
1. Define computer processing.
2. State four main components of computer.
3. State five uses of computer in the society.
4. Define computer processing.
5. State four main components of computer.

Weekend Assignment
1. The ……...... executes a series of instructions that are fed to it by software programs installed onto a
computer’s hard drive and loaded into random access memory (RAM). (a) core (b) CPU (c)
ROM (d) control unit
2. ……….. stores program instruction in the computer system. (a) memory (b) CPU (c) ALU (d)
control unit.
3. ……….. are the devices your computer uses to relay information to the user. (a) input unit (b) output
unit (c) memory (d) primary.
4. ………. are all the devices you use to feed information to the computer. (a) input unit (b) output
(c) memory (d) CPU
5. ……….. are comprehensively computerized in order to facilitate patient care at competitive cost. (a)
Hospitals (b) airline reservation (c) banking (d) payroll

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 LESSON NOTE FOR WEEK 3
SUBJECT COMPUTER STUDIES / ICT
CLASS JSS 1
SEX MIXED
AGE 11+ YEARS
PEROID
DURATION
TIME
DATE
NO: OF STUDENTS
TOPIC IMPORTANCE OF COMPUTER AS A TOOL FOR PROCESSING
DATA

Instructional Objective: By the end of the lesson, students should be able to:
1. Define data processing.
2. List any four processing techniques.
3. Give two advantages of using computer to process information.
4. Give two disadvantages of using computer for data processing.

Reference Material: New Computer Studies for JSS 1 By J.O.E Otuka et al.
Instructional Material: Computer system

PRESENTATION
STEP 1: DATA PROCESSING TECHNIQUES
There are different basic techniques of data processing namely:
Batch Processing
Real Time Processing
Time Sharing Processing
Demand Processing
Multi-Processing

 Batch Processing
It is a technique by which a number of jobs (data) are inputed into the computer system at the same
time and the computer is made to execute those jobs, one after the other in sequence, at its own pace.
This type of processing is suitable for accounting and business applications such as payroll accounts,
invoicing, purchases, sales, ledger etc.

 Real Time Processing

In Real-Time Processing data are processed immediately, now. It is processed in rapid manner so that
the results of the processing are available in time to influence the current activity or process being
monitored or controlled. It is useful in transaction application where time is a critical factor e.g. airline
reservations, banks etc.

 Time Sharing
In time-sharing processing, many users can work with the computer through terminals that are
connected to remote distance. Here, the processor time is shared among variable number of users at
essentially the same time, that is, it allows simultaneity and concurrency. Each user is given a fraction
of the processor time, at the elapse of which the processor is switched over to another user.

 Demand Processing
This is a type of processing that is done only when it becomes necessary. The data have been stored
in the computer memory, and would then be processed when it becomes necessary.

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  Multi-Processing
In all the modes of computer operation discussed earlier only one processor is in the system. A multi-
processing system is one in which there are two or more processors that may be sharing the same main
memory. This makes simultaneous execution of two or more programs possible.

 Online Processing
This is a kind of processing whereby many terminals are directly connected to the CPU. It also
involves a method of entering transaction and getting the output immediately. An online system is not
always a real time response system, but real time system must have an online capability.

STEP 2: IMPORTANCE OF THE COMPUTER AS A TOOL FOR DATA PROCESSING

The following are advantages of using computers for data processing:
1. Speeds: Computer operations (the execution of an instruction such as the addition of two numbers)
are done at the speed of light i.e. data is processed at a very fast rate when using the computer.
2. Accuracy: The computer is very accurate when processing data, it is not prone to errors like human
beings.
3. Reliability: Computers can work for long periods of time performing repetitive tasks without
complaining and a user can be sure that a directive given to the computer will be carried out.
4. Storage: Computer storage is far more efficient such that the quantity of data stored at any point
can be accessed anytime it is required.
5. Memory Capability: Computer systems can store a huge amount of data or information and they
have total and instant recall of these data.
6. Exchange of information: Computer has the ability to exchange information quickly and easily
with computers and other devices.
7. Efficiency and productivity can be raised.
8. Running cost becomes lower in the long term.
9. Overall security can be raised due to less human intervention.

It may be noted however that, the use of computer for data processing has its own disadvantages: like, it is
expensive, it requires trained personnel and it is costly to maintain.

General Evaluation
1. Define data processing.
2. State four data processing techniques.
3. State six importance of using computer as a data processing tool.

Weekend Assignment
1. The …… is a technique by which a number of jobs (data) are input into the computer system at the same time
and the computer is made to execute those jobs, one after the other in sequence. (a) batch processing (b) on-line
processing (c) time sharing (d) demand processing
2. Computer operations are done at a speed of …... (a) moon (b) electronic (c) Light (d) sun
3. …….. is a kind of processing whereby many terminals are directly connected to the CPU. (a) online processing
(b) demand processing (c) time sharing (d) batch processing
4. In time-sharing processing, many users can work with the computer through terminals that are connected to
remote distance.
(a) batch (b) time sharing (c) demand (d) online
5. A………….. system is one in which there are two or more processors that may be sharing the same main
memory. (a) Multi processing (b) batch processing
(c) online processing (d) real time processing

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 LESSON NOTE FOR WEEK 4
SUBJECT COMPUTER STUDIES / ICT
CLASS JSS 1
SEX MIXED
AGE 11+ YEARS
PEROID
DURATION
TIME
DATE
NO: OF STUDENTS
TOPIC THE DEVICES

Instructional Objective: By the end of the lesson, students should be able to:
1. What is a device?
2. List the five classes of device

Reference Material: New Computer Studies for JSS 1 By J.O.E Otuka et al.
Instructional Material: Computer system

PRESENTATION
STEP 1: DEFINITION OF A DEVICE
Devices are instruments, equipment or machines made to perform specific functions.

Class of Devices
Devices can be classified into four types:
1. Early counting devices
2. Mechanical devices
3. Electrical device
4. Electronic device
5. Analogue device

 Early counting devices: Examples of this include stones, pebbles, beads, fingers and toes, sticks,
grains, marks on the wall etc.
 Mechanical devices: mechanism consisting of a device that works on mechanical principles.
Examples of this include ship, cart, sewing machine, motorcycle, car, typewriter, wheel barrow,
Abacus, Slide rule, Napier bone, Pascaline, Jacquard’s loom, Babbage’s analytic engine
 Electrical devices: take the energy of electric current and transform it in simple ways into some other
form of energy Examples include electric iron, electric kettle, blender, mixer, electric clipper, fridge,
fan, washing machine, grinding machine etc.
 Electronic devices: are components for controlling the flow of electrical currents for the purpose of
information processing and system control. Examples include photocopier, scoreboard, calculator,
radio, camera, television, telephone and computer.
 Analogue: They are used to measure things that change from time to time. Examples include:
barometer, thermometer, weighing scale, rain Guage etc.

General Evaluation
1. What is a device?
2. List the five classes of device.
3. State the examples of devices.

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Weekend Assignment
1. ____ is an equipment used to perform specific function. (a) Devices (b) Computer (c) Analog (d)
mechanical
2. Devices can be classified into ____ (a) 3 (b) 4 (c) 5 (d) 2
3. Which of these is not early counting devices? (a) fingers (b) sticks (c) Calculator (d) pebbles
4. Abacus is an example of ____ devices (a) Mechanical (b) Electrical (c) Computer (d) electrical
5. ____ is an example of electronic device (a) Abacus (b) Computer (c) Fan (d) ship

LESSON NOTE FOR WEEK 5

SUBJECT COMPUTER STUDIES / ICT
CLASS JSS 1
SEX MIXED
AGE 11+ YEARS
PEROID
DURATION
TIME
DATE
NO: OF STUDENTS
TOPIC TYPES OF COMPUTERS, USES AND APPLICATION OF
COMPUTER

Instructional Objective: By the end of the lesson, students should be able to:
1. List the three types of computers.
2. Write short notes on the three types of computers.
3. List any two examples each of digital devices and analogue devices
4. State five areas of application of Computer

Reference Material: New Computer Studies for JSS 1 By J.O.E Otuka et al.
Instructional Material: Computer system

PRESENTATION
STEP 1: TYPES OF COMPUTERS
There are three types of Computers namely:
Digital computer
Analogue Computer
Hybrid computer

 Digital Computer
Digital computer system is a system or device using discrete signals or values to represent data
numerically. They are computers that are used for counting and to work on numbers. It works on
data of non-continuous or discontinuous nature. Most digital representation in computing is based on
the binary system. For example, the channel select on the television set is a digital device because it
restricts you to a discrete set of channels. Another example is the digital wrist watch which shows
you the exact time in digits and digital computers, calculator, microcomputer, digital ammeter.

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  Analogue Computer
These are computers that work on non-discrete or continuous data. In contrast to digital computers,
they have continuous value. They are used to measure values that changes from time to time. Examples
of such measurements are temperature, speed, weight etc. They measure physical quantities and
convert them to numbers. Examples of analogue devices are thermometer, speedometer, fuel gauge,
electric meters, petrol dispenser at petrol station and analogue ammeter. They are mostly used in
industrial operations.

 Hybrid Computers
The high speed of analogue machine is combined with the flexibility of a digital machine. A hybrid
computer is made up of digital and an analogue connect together in a system.
Hybrid computers are mostly used in scientific research and technical application because they count
and measure. They have both abilities to handle discrete and non-discrete data since the properties of
analogue and digital are combined in hybrid computers.

STEP 2: USES OF COMPUTER

1. Computer can be used in computer schools, hospitals, government offices.
2. Computers are used for organizing data management and information.
3. It enhances the learning process with interactivity e.g students’ compact disk.
4. It aids communication system through e-mail, teleconferencing, telephone E-presence.
5. It is also used for word processing i.e. used to write letters, memos and documents.
6. Computers are used for graphical presentation such as production of all sorts of cards, letterheads
calendars etc.
7. It is used for fun, excitement and relaxation through computer games.
8. It helps to plan schedule and control people resources and cost of project.

STEP 3: APPLICATION OF COMPUTERS

1. Computer in education: they are used as teaching aids in CAL (Computer Aided Learning) or
CAI (Computer Aided Instruction).
2. Personnel administration: are required for the keeping of comprehensive records on employees.
3. Computer in business: is used for planning and forecasting using simulated scenarios. For
experience and solution.
4. Medicine: used to check health parameters of patients.
5. Banking: helps to solve large amount of bank dealings and operations.
6. Engineering: complex calculations and drawings are easily tackled.
7. Recreational activities: used for playing games for relaxation, fun and excitement.
8. Computer in art and music: the use of AutoCAD (computer aided drawings; amateur and
professional musicians can compose or play and refine existing musical composition on computer.

General Evaluation
1. State five uses of computer.
2. State five areas of application of Computer.
3. Mention the three types of Computers.
4. Write short notes on the three types of Computers.
5. Mention five uses of computer in the society.

Weekend Assignment
1. How many types of computers do we have? (a) 1 (b) 2 (c) 3 (d) 4
2. Analogue computers work on ____ (a) non-discrete data (b) discrete data (c) data (d) digital
3. ____ computer measures physical quantities. (a) Digital (b) Hybrid (c) Analogue (d) none

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 4. ____ computer is used for counting? (a) Digital (b) Hybrid (c) Analogue (d) continus
5. Which of these computers has the ability to handle discrete and non-discrete? Digital (b) Hybrid (c)
Analogue (d) continuous
6. GIGO means ……... a) Garbage in Garbage out. b) Garbage indoor Garbage outdoor (c) Gate in Gate
out d) all of the above
7. ………. is used for computer teaching aids. a) TAN b) CAN c) CAD (d) PAN
8. Computer is used in ……. to check health parameters of patients. (a) medicine (b) school c) industry
(d) factory
9. Computers can be used for electronic advertising in form of electronic bill board a) true b) false c)
none of the above (d) all of the above
10. ……….is used for fun, excitement and relaxation. (a) computer game (b) word (c) graphic (d) excels

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 LESSON NOTE FOR WEEK 6
SUBJECT COMPUTER STUDIES / ICT
CLASS JSS 1
SEX MIXED
AGE 11+ YEARS
PEROID
DURATION
TIME
DATE
NO: OF STUDENTS
TOPIC ADVANTAGES AND DISADVANTAGES OF COMPUTER

Instructional Objective: By the end of the lesson, students should be able to:
1. State three for each the advantages and disadvantages of computer.

Reference Material: New Computer Studies for JSS 1 By J.O.E Otuka et al.
Instructional Material: Computer system

PRESENTATION
STEP 1: ADVANTAGES OF COMPUTERS
1. Computers are widely used for data processing because they possess certain advantages over
manual labour by humans.
2. Computer can be used to process data at a faster speed.
3. Increased access to the information stored in the resource centre.
4. Process data at an accurate rate.
5. It can be used to process a very large volume of transaction no matter how complex it may appear.
6. Reliable in its work.
7. It has a large storage capacity
8. It provides a better job quality.
9. Increased efficiency - information stored on a computer database can be used for different
purposes.

STEP 2: DISADVANTAGES OF COMPUTERS

Unemployment
Different tasks are performed automatically by using computers. It reduces the need of people and
increases unemployment in society.

Wastage of Time and Energy

Many people use computers without positive purpose. They play games and chat for a long period of
time. It causes wastage of time and energy. Young generation is now spending more time on the social
media websites like Facebook, Twitter etc or texting their friends all night through smartphones which
is bad for both studies and their health and it also has adverse effects on the social life.

Data Security
The data stored on a computer can be accessed by unauthorized persons through networks. It has
created serious problems for the data security.

Computer Crimes
People use the computer for negative activities. They hack the credit card numbers of the people and
misuse them or they can steal important data from big organizations.

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 Privacy Violation
The computers are used to store personal data of the people. The privacy of a person can be violated
if the personal and confidential records are not protected properly.

Health Risks
The improper and prolonged use of computer can result in injuries or disorders of hands, wrists,
elbows, eyes, necks and backache. The users can avoid health risks by using the computer in proper
position. They must also take regular breaks while using the computer for longer period of time. It is
recommended to take a couple of minutes break after 30 minutes of computer usage.

STEP 3: ADVANTAGES USING COMPUTER

1. Computers are fast.
2. They have large storage facilities.
3. Computers are very accurate.
4. It performs more operations that can be effectively performed manually.
5. Computer accommodates growth i.e enabling the organization to move forward and compete
effectively with other firms.
6. Provides immediate access to data i.e providing customers and clients with immediate responses
to inquire about services rendered.
7. Assist with decision making i.e. delivering information n timely manner.

General Evaluation
1. Define data security
2. State the problems associated to data security.
3. State four advantages of computer
4. State two disadvantages of computer.

Weekend Assignment
1. The following are the advantages of computer a) it has high speed b) better job qualities c)
reliability d) all of the above
2. Prone to fraud is one of the disadvantages of using computer a) true b) false c) none of the above
3. The use of computer creates unemployment a) true b) false c) none of the above
4. Computers can be used for electronic advertising in form of electronic bill board a) true b) false c)
none of the above
5. One of the following is not a disadvantage of computer. (a) health risks (b) privacy violation (c)
unemployment (d) reliability

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 LESSON NOTE FOR WEEK 8
SUBJECT COMPUTER STUDIES / ICT
CLASS JSS 1
SEX MIXED
AGE 11+ YEARS
PEROID
DURATION
TIME
DATE
NO: OF STUDENTS
TOPIC MASTERY OF THE KEYBOARD I & II (Practical)

Instructional Objective: By the end of the lesson, students should be able to:
1. Define the keyboard.
2. State the two types of keyboards.
3. Mention five sections of the keyboard
4. State the correct sitting positions for mastering keyboard typing acts

Reference Material: New Computer Studies for JSS 1 By J.O.E Otuka et al.
Instructional Material: Computer system (Keyboard)

PRESENTATION
STEP 1: CORRECT SITTING POSITION
- Make sure you have corrected sitting posture to avoid back ache, eye strain and aching hands
- Adjustable seat back.
- Room to move your legs,
- Screen at comfortable height.
- Use anti-glare protector.

Using the Keyboard to Type Names, Letter

Use of software tutor e.g Mavis beacon typing tutor
Attempt using your ten fingers to type
Have a soft touch on the keyboard

General Evaluation
1. State the correct sitting positions for mastering keyboard typing acts.
2. State the uses of keyboard
3. Define the keyboard.
4. State the two types of keyboards.
5. Mention five sections of the keyboard.

Weekend Assignment
1. The types of enhanced keyboard include the following except. (a) multimedia (b) programming (c)
cordless (d) standard
2. There are ……... types of keyboard (a) a (b) 3 (c) 2 (d) 5
3. The ……... has eight arrow keys. (a) standard (b) enhance (c) multiple (d) intermediate
4. The……... hasten functions keys. (a) enhance (b) standard (c) none of the above (d) none of the
above.
5. ……….. key controls the screen movement keys. (a) cursor (b) numeric (c) function (d) alphabet
6. The types of enhanced keyboard include the following except. (a) multimedia (b) programming (c)
cordless (d) standard
7. There are ……... types of keyboards. (a) a (b) 3 (c) 2 (d) 5
8. The ……... has eight arrow keys. (a) standard (b) enhance (c) multiple (d) intermediate

3RDTERM/COMPUTER STUDIES/JS 1 Page 12

 9. The……... hasten functions keys. (a) enhance (b) standard (c) none of the above (d) none of the
above.
10. ……….. key controls the screen movement keys. (a) cursor (b) numeric (c) function (d) alphabet.

LESSON NOTE FOR WEEK 9

SUBJECT COMPUTER STUDIES / ICT
CLASS JSS 1
SEX MIXED
AGE 11+ YEARS
PEROID
DURATION
TIME
DATE
NO: OF STUDENTS
TOPIC SCREEN POINTING DEVICES

Instructional Objective: By the end of the lesson, students should be able to:
1. List five examples of screen pointing devices.
2. Mention four different versions of mouse
3. Briefly explain how a computer mouse works
4. Define booting.
5. List and explain the two types of booting.
6. State the acronym for the following: (i) POST (ii) BIOS

Reference Material: New Computer Studies for JSS 1 By J.O.E Otuka et al.
Instructional Material: Computer system (Mouse)

PRESENTATION
STEP 1: SCREEN POINTING DEVICE
A device with which you can control the movement of the pointer to select items on a display screen, is a
hardware input device that allows the user to move the mouse cursor in a computer program or GUI operating
system.

Types of Screens Pointing Devices

1. Mouse
2. Track Ball
3. Touch Ball
4. Joystick
5. Light pen

 Mouse
A mouse is a pointing device used to control the movement of a pointer cursor in a graphical
environment. It is an alternative to the keyboard.
The different versions of mouse are as follows:
1. PS/2
2. Serial
3. Universal serial bus (USB)
3RDTERM/COMPUTER STUDIES/JS 1 Page 13
 4. Cordless

Parts of a mouse
A mouse is made up of the following parts:
1. Left button: This is used for clicking or double clicking an object.
2. Right button: It brings a task menu which contains some commands.
3. Mouse ball: This is a small round ball under the mouse which rolls or a mouse pad or smooth
surface as the mouse is moved on the table.
4. Mouse pointer: This is a small arrow- shaped object that moves around on a computer screen
and which is used to point at objects in a graphical operating environment.
5. Mouse cord: It is a tiny cord fixed onto the mouse for transferring signals to the processor

Mouse Techniques
- Pointing: Move the mouse to move the on-screen pointer.
- Clicking: Press and release the left mouse button once.
- Double-Clicking: Press and release the left mouse button twice.
- Dragging: Hold down the left mouse button as you move the pointer.
- Right-Clicking: Press and release the right mouse button.
- Select and deselecting objects.

STEP 2: FUNDAMENTAL COMPUTER OPERATION

Booting: Booting is the process of starting the computer or preparing the computer for use.

Starting up a Micro Computer System:

When the power button is pressed to boot up, the PC goes through a process called power- on – self
test (POST). This POST enables the computer to read several files to remind itself what it should be
doing and to perform a complex series of tests to make sure all its hardware components are working
properly.
When the computer is booted up, an electrical current travel to the microprocessor and resets the chip
to clear its memory. During reset, the microprocessor sends a command to the computer’s read only
memory (ROM) chips to run the computer’s basic input/output system (BIOS) boot program.
Thereafter, the boot program connects the hard drive, loading windows XP/VISTA/7 core system files
through the microprocessor and loading the device driver software needed to allow communication
between the operating system and the PC’s hardware.
After communicating with the video card to create the desktop environment, windows operating
system then opens the Startup folder which is immediately accessed from the hard drive and loaded
through the microprocessor into RAM, after which the computer is ready for use.

There are two types of booting:

1. Cold booting
2. Warm booting

Cold booting: The process of switching the computer by pressing the power switch on the system unit.
Warm booting: The process of restarting the computer by pressing the reset button on the system unit or by
using the ctrl + Alt + Del key.

General Evaluation
1. List five examples of screen pointing devices.
2. Mention four different versions of mouse
3. State five parts of a mouse
4. State five mouse action techniques.
5. Differentiate between right clicking and left clicking.

3RDTERM/COMPUTER STUDIES/JS 1 Page 14

Weekend Assignment
1. A ………….. is a pointing device across a desk surface in order to point and select objects on
the screen. (a) keyboard (b) scanner (c) mouse (d) light pen
2. The …… mouse button is the most frequently used. (a) Left (b) Right
(c) Center (d) Middle
3. The following are examples of screen pointing devices except ………. (a) mouse (b) joystick
(c) light pen (d) keyboard
4. ………. is a tiny cord fixed onto the mouse for transferring signals to the processor. (a) mouse
pointer (b) mouse cord (c) keyboard (d) track ball
5. ……… is used for clicking or double clicking an object. (a) left button (b) right button (c)
mouse cord (d) track ball
6. The process of starting up computer is referred to as ………. (a) booming (b) switching (c)
booting (d) starter
7. The two types of booting are ….. and …….. (a) cold and warm booting (b) cold and hot booting
(c) warm and hot booting (d) none of the above
8. The process of switching the computer by pressing the power switch on the system unit is
called …… booting. (a) cold booting (b) hot booting (c) weather (d) cold
9. The process of restarting the computer by pressing the reset button on the system unit or by
using the ctrl + Alt + Del key is called……… (a) cold booting (b) hot booting (c) warm booting
(d) CPU
10. BIOS means ……………. (a) basic input/output system (b) base input/output system (c) boot
inside/outside storage (d) basic inside/outside system

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 OBJECTIVES REVIEW QUESTIONS

1. The following are the advantages of computer a) it has high speed b) better job qualities c) reliability d)
all of the above
2. Prone to fraud is one of the disadvantages of using computer a) true b) false c) none of the above
3. The use of computer creates unemployment a) true b) false c) none of the above
4. Computers can be used for electronic advertising in form of electronic bill board a) true b) false c) none
of the above
5. One of the following is not a disadvantage of computer. (a) health risks (b) privacy violation (c)
unemployment (d) reliability
6. How many types of computers do we have? (a) 1 (b) 2 (c) 3 (d) 4
7. Analogue computers work on ____ (a) non-discrete data (b) discrete data (c) data (d) digital
8. ____ computer measures physical quantities. (a) Digital (b) Hybrid (c) Analogue (d) none
9. ____ computer is used for counting? (a) Digital (b) Hybrid (c) Analogue (d) continus
10. Which of these computers has the ability to handle discrete and non-discrete? Digital (b) Hybrid (c)
Analogue (d) continuous
11. GIGO means ……... a) Garbage in Garbage out. b) Garbage indoor Garbage outdoor (c) Gate in Gate out
d) all of the above
12. ………. is used for computer teaching aids. a) TAN b) CAN c) CAD (d) PAN
13. Computer is used in ……. to check health parameters of patients. (a) medicine (b) school c) industry (d)
factory
14. Computers can be used for electronic advertising in form of electronic bill board a) true b) false c) none
of the above (d) all of the above
15. ……….is used for fun, excitement and relaxation. (a) computer game (b) word (c) graphic (d) excels
16. ____ is an equipment used to perform specific function. (a) Devices (b) Computer (c) Analog (d)
mechanical
17. Devices can be classified into ____ (a) 3 (b) 4 (c) 5 (d) 2
18. Which of these is not early counting devices? (a) fingers (b) sticks (c) Calculator (d) pebbles
19. Abacus is an example of ____ devices (a) Mechanical (b) Electrical (c) Computer (d) electrical
20. ____ is an example of electronic device (a) Abacus (b) Computer (c) Fan (d) ship
21. The …… is a technique by which a number of jobs (data) are input into the computer system at the same time and
the computer is made to execute those jobs, one after the other in sequence. (a) batch processing (b) on-line
processing (c) time sharing (d) demand processing
22. Computer operations are done at a speed of …... (a) moon (b) electronic (c) Light (d) sun
23. …….. is a kind of processing whereby many terminals are directly connected to the CPU. (a) online processing
(b) demand processing (c) time sharing (d) batch processing
24. In time-sharing processing, many users can work with the computer through terminals that are connected to remote
distance.
(a) batch (b) time sharing (c) demand (d) online
25. A………….. system is one in which there are two or more processors that may be sharing the same main memory.
(a) Multi processing (b) batch processing (c) online processing (d) real time processing
26. The ……...... executes a series of instructions that are fed to it by software programs installed onto a computer’s hard
drive and loaded into random access memory (RAM). (a) core (b) CPU (c) ROM (d) control unit
27. ……….. stores program instruction in the computer system. (a) memory (b) CPU (c) ALU (d) control unit.
28. ……….. are the devices your computer uses to relay information to the user. (a) input unit (b) output unit (c) memory
(d) primary.
29. ………. are all the devices you use to feed information to the computer. (a) input unit (b) output (c) memory (d)
CPU
30. ……….. are comprehensively computerized in order to facilitate patient care at competitive cost. (a) Hospitals (b)
airline reservation (c) banking (d) payroll
31. A ………….. is a pointing device across a desk surface in order to point and select objects on the screen.
(a) keyboard (b) scanner (c) mouse (d) light pen
32. The …… mouse button is the most frequently used. (a) Left (b) Right
(c) Center (d) Middle
33. The following are examples of screen pointing devices except ………. (a) mouse (b) joystick (c) light

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 pen (d) keyboard
34. ………. is a tiny cord fixed onto the mouse for transferring signals to the processor. (a) mouse pointer
(b) mouse cord (c) keyboard (d) track ball
35. ……… is used for clicking or double clicking an object. (a) left button (b) right button (c) mouse cord
(d) track ball
36. The process of starting up computer is referred to as ………. (a) booming (b) switching (c) booting (d)
starter
37. The two types of booting are ….. and …….. (a) cold and warm booting (b) cold and hot booting (c) warm
and hot booting (d) none of the above
38. The process of switching the computer by pressing the power switch on the system unit is called ……
booting. (a) cold booting (b) hot booting (c) weather (d) cold
39. The process of restarting the computer by pressing the reset button on the system unit or by using the ctrl
+ Alt + Del key is called……… (a) cold booting (b) hot booting (c) warm booting (d) CPU
40. BIOS means ……………. (a) basic input/output system (b) base input/output system (c) boot
inside/outside storage (d) basic inside/outside system

THEORY QUESTIONS

1. Define data security

2. State the problems associated to data security.
3. State four advantages of computer
4. State two disadvantages of computer.
5. State five uses of computer.
6. State five areas of application of Computer.
7. Mention the three types of Computers.
8. Write short notes on the three types of Computers.
9. Mention five uses of computer in the society
10. What is a device?
11. List the five classes of device.
12. State the examples of devices.
13. Define data processing.
14. State four data processing techniques.
15. State six importance of using computer as a data processing tool.
16. Define computer processing.
17. State four main components of computer.
18. State five uses of computer in the society.
19. Define computer processing.
20. State four main components of computer
21. List five examples of screen pointing devices.
22. Mention four different versions of mouse
23. State five parts of a mouse
24. State five mouse action techniques.
25. Differentiate between right clicking and left clicking.

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