9
NOT
Technology and
Livelihood Education
Quarter 1,Wk.1 - Module 1
Introduction to Computers
(design your own cover page)
Department of Education ● Republic of the Philippines
Technology and Livelihood Education- Grade 9
Alternative Delivery Mode
Quarter 1, Wk.1 - Module 1: Introduction to Computers
First Edition, 2020
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(_______________________)
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Chairperson:
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Regional Director
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9
Technology and
Livelihood
Education
Quarter 1,Wk.1 - Module 1
Introduction to Computers
This instructional material was collaboratively developed and reviewed
by educators from public and private schools, colleges, and or/universities. We
encourage teachers and other education stakeholders to email their feedback,
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Department of Education ● Republic of the Philippines
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Table of Contents
What This Module is About ....................................................................................................................... i
What I Need to Know .................................................................................................................................. ii
How to Learn from this Module .............................................................................................................. ii
Icons of this Module ................................................................................................................................... iii
What I Know ................................................................................................................................................iii
Lesson 1:
Understanding Computers ................................................................................................ 1
What I Need to Know.....................................................................................................
What’s New ...................................................................................................................
What Is It ...........................................................................................................................
What’s More ....................................................................................................................
What Is It ..........................................................................................................................
What’s More ....................................................................................................................
What’s New ….................................................................................................................
What I Have Learned.....................................................................................................
What I Can Do .................................................................................................................
Lesson 2:
Computers Basic Operations ..........................................................................................
What’s In............................................................................................................................
What I Need to Know.....................................................................................................
What’s New ...................................................................................................................
What Is It .......................................................................................................................
What’s More ..................................................................................................................
What I Have Learned ………………………………………………………….
What I Can Do .............................................................................................................
(or more lessons)
Summary
Assessment: (Post-Test)
Key to Answers ......................................................................................................................................
References ...............................................................................................................................................
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What This Module is About
A computer is one of the most brilliant inventions of mankind. Thanks to the
computer technology, we were able to achieve storage and processing of huge
amounts of data; we could rest our brains by employing computer memory capacities
for storing information. Due to computers, we have been able to speed up daily work,
carry out critical transactions and achieve accuracy and precision in work.
Being a modern-day kid you must have used, seen, or read about computers.
This is because they are an integral part of our everyday existence. Be it school,
banks, shops, railway stations, hospital or your own home, computers are present
everywhere, making our work easier and faster for us. As they are such integral parts
of our lives, we must know what they are and how they function.
In this module, you will have a great deal in understanding computer and its
basic operation. At the end of this module, you will be able to apply the knowledge of
the classification of computer, the types of computer that used nowadays, the type of
personal computers and the operation of the computer on how it works as a system.
What I Need to Know
As you go through this module, you will be able to understand what computer is all
about. Readings and enhancement activities are provided to serve you as a guide. So
keep going and good luck!
Content Standard
The learner demonstrates
understanding of basic concepts,
underlying theories and core
competencies in computer systems
and networks.
Performance Standard
The learner independently provides
quality and marketable service in
computer hardware servicing in terms of
computer systems and networks
installation and diagnose and trouble
shoot computer systems as prescribed in
the TESDA Training Regulation.
How to Learn from this Module
To achieve the objectives cited above, you are to do the following:
•
Take your time reading the lessons carefully.
•
Follow the directions and/or instructions in the activities and exercises diligently.
•
Answer all the given tests and exercises.
Icons of this Module
What I Need to
This part contains learning objectives that
Know
are set for you to learn as you go along the
module.
What I know
This is an assessment as to your level of
knowledge to the subject matter at hand,
meant specifically to gauge prior related
knowledge
This part connects previous lesson with that
of the current one.
What’s In
What’s New
An introduction of the new lesson through
various activities, before it will be presented
to you
What is It
These are discussions of the activities as a
way to deepen your discovery and understanding of the concept.
What’s More
These are follow-up activities that are intended for you to practice further in order to
master the competencies.
What I Have
Learned
Activities designed to process what you
have learned from the lesson
What I can do
These are tasks that are designed to showcase your skills and knowledge gained, and
applied into real-life concerns and situations.
II
What I Know
Multiple Choice. Select the letter of the best answer from among the given
choices.
1. What computer that is also known as Personal Computer?
a. Microcomputer
b. Mainframe Computer
c. Supercomputer
d. none of the above
2. What is the type of computer which are used by the majority of the people in their
daily lives?
a. Microcomputer
b. Mainframe Computer
c. Desktop Computer
d. all of the above
3. It can easily record everything from your signature, to your handwriting, to original
drawings directly to your computer.
a. Laptop
b. Digital Tablets
c. Notebook
d. all of the above
4. It is a small and portable compared to the immobile desktop computer.
a. Laptop
b. Netbook
c. Notebook
d. all of the above
5. What computer that is also much smaller, portable and very lightweight?
a. In-car Computer b. Netbook
c. Notebook
d. all of the above
6. It is essentially designed for surfing the net, while notebooks have different
features, including better operating systems, optical drives and more offline use.
a. In-car Computer b. Netbook
c. Mainframe
d. all of the above
7. What computer that is typically have a display screen with touch input and/or a
miniature keyboard and weighting less than 2 pounds (0.91 kg)?
a. In-car Computer b. Handheld Computer
c. Mainframe
d. all of the above
8. What computer which is referred to as the mid sized computers and they serve as
the same functions as the normal desktop computers?
a. Minicomputers
b. Handheld Computer
c. Mainframe
d. all of the above
9.What type of computer that is large in size, large in memory and powerful?
a. Minicomputer
b. Handheld Computer
c. Mainframe
d. all of the above
10. What type of computer that is used for problems requiring complex calculations?
a. Minicomputer
b. Supercomputer
c. Mainframe
d. all of the above
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Lesson
1
UNDERSTANDING
COMPUTERS
What I Need to Know
As you go through this module, you will be able to understand what computer is all
about. Readings and enhancement activities are provided to serve you as a guide. All
you need to do is to read carefully all the topics and apply the knowledge you’ve gained
through the distinct activities provided in this module. So keep going and good luck!
LO 1. Plan and prepare for installation
1. Understanding computers.
2. Identify the different types of computer and devices.
3. Familiarize with the classification of computer.
1
What’s New
Activity 1. A. Choose the answers and fill-in the missing letter below:
Micro
Palmtop
Personal
Super
Mini
Notebook
Mainframe
General Purpose Computers are …
1.
2.
3.
_ u _ _ _ Computer.
M _ _ _ f _ _ _ _ (Large) Computer.
M _ _ _ (Medium) Computer.
4. M _ _ _ _ (Small) Computer.
5.P _ _ _ _ _ _ _
Computer
6._ _ t _ _ _ _ _
Computer
B) Choose the answers and fill-in the missing letter below:
Robot
Pager
X-Ray
Calculator
Special Purpose Computers are …
1.
2.
3.
4.
F__
_ l _ _ _ Sound.
P____
C____l____
Fax
Ultra
7.P _ _ _ _ _ p
Computer
5.
_-R__
6.
R____
What Is It
Guide Questions:
* What is Computer?
* What are the different types of Computer?
* What are the different types of Personal Computer?
* What is the primary operation of each Computer?
A computer is an electronic device that has the capability to manipulate
information or data, store, retrieve, and process it for more useful information. It is
programmable so it can respond to specific instructions or commands.
Computers of the earlier years were of the size of a large room and were
required to consume huge amounts of electric power. However, with the advancing
technology, computers have shrunk to the size of a small watch. Depending on the
processing power and size of computers, they have been classified under various
types. Let us look at the classification of computers.
Different Types of Computers
Based on the operational principle of computers, they are categorized as analog,
digital and hybrid computers.
Analog Computers: These are almost extinct today. These are different from a
digital computer because an analog computer can perform several mathematical
operations simultaneously. It uses continuous variables for mathematical operations
and utilizes mechanical or electrical energy.
Figure1. Different Types of Computer
Digital Computers: They use digital circuits and are designed to operate on two
states, namely bits 0 and 1. They are analogous to states ON and OFF. Data on
these computers is represented as a series of 0s and 1s. Digital computers are
suitable for complex computation and have higher processing speeds. They are
programmable. Digital computers are either general purpose computers or special
purpose ones. Special purpose computers, as their name suggests, are designed
for specific types of data processing while general purpose computers are meant for
general use.
Hybrid Computers: These computers are a combination of both digital and analog
computers. In this type of computers, the digital segments perform process control
by conversion of analog signals to digital ones.
Classification of Computers
The following are the classification of the different types of computers based
on their sizes and functionalities:
Mainframe Computers: Large organizations use mainframes for highly critical
applications such as bulk data processing and ERP. Most of the mainframe computers
have the capacities to host multiple operating systems and operate as a number of
virtual machines and can substitute for several small servers.
Minicomputers: In terms of size and processing capacity, minicomputers lie in
between mainframes and microcomputers. Minicomputers are also called mid-range
systems or workstations. The term began to be popularly used in the 1960s to refer to
relatively smaller third generation computers.
Servers: They are computers designed to provide services to client machines in a
computer network. They have larger storage capacities and powerful processors.
Running on them are programs that serve client requests and allocate resources like
memory and time to client machines. Usually they are very large in size, as they have
large processors and many hard drives. They are designed to be fail-safe and resistant
to crash.
Supercomputers: The highly calculation-intensive tasks can be effectively performed
by means of supercomputers. Quantum physics, mechanics, weather forecasting,
molecular theory are best studied by means of supercomputers. Their ability of parallel
processing and their well-designed memory hierarchy give the supercomputers, large
transaction processing powers.
Figure2. Classification of Computer
Microcomputers: A computer with a microprocessor and its central processing unit it
is known as a microcomputer. They do not occupy space as much as mainframes do.
When supplemented with a keyboard and a mouse, microcomputers can be called
personal computers. A monitor, a keyboard and other similar input output devices,
computer memory in the form of RAM and a power supply unit come packaged in a
microcomputer. These computers can fit on desks or tables and prove to be the best
choice for single-user tasks.
Personal computers come in different forms such as desktops, laptops and
personal digital assistants (refer to Figure 3). Let us look at each of these types of
computers.
Desktops: A desktop is intended to be used on a single location. The spare parts of
a desktop computer are readily available at relatively lower costs. Power consumption
is not as critical as that in laptops. Desktops are widely popular for daily use in the
workplace and households.
Laptops: Similar in operation to desktops, laptop computers are miniaturized and
optimized for mobile use. Laptops run on a single battery or an external adapter that
charges the computer batteries.
Netbooks: They fall in the category of laptops, but are inexpensive and relatively
smaller in size. They had a smaller feature set and lesser capacities in comparison to
regular laptops, at the time they came into the market.
Personal Digital Assistants (PDAs): It is a handheld computer and popularly known
as a palmtop. It has a touch screen and a memory card for storage of data. PDAs can
also be used as portable audio players, web browsers and smart phones. Most of them
can access the Internet by means of Bluetooth or Wi-Fi communication.
Tablet Computers: Tablets are mobile computers that are very handy to use. They
use the touch screen technology. Tablets come with an onscreen keyboard or use a
stylus or a digital pen. Apple's iPod redefined the class of tablet computers.
Wearable Computers: A record-setting step in the evolution of computers was the creation of
wearable computers. These computers can be worn on the body and are often used in the study
of behavior modeling and human health. Military and health professionals have incorporated
wearable computers into their daily routine, as a part of such studies. When the users' hands
and sensory organs are engaged in other activities, wearable computers are of great help in
tracking human actions. Wearable computers do not have to be turned on and off and remain
in operation without user intervention
What’s More
Activity 2: FILL IN THE BLANKS
Direction: Identify the type of computer being described in the following
sentences and write your answer on space provided.
1. These are mobile computers that are very handy to use. ___________________
2. They are computers designed to provide services to client machines in a
computer network.____________________
3. They are also called mid-range systems or workstations.____________________
4. A computer with a microprocessor and its central processing unit._____________
5. They fall in the category of laptops, but are inexpensive and relatively
smaller in size.__________________________
6. A type of computer which is intended be used on a single location. ____________
7. They use digital circuits and are designed to operate on two states, namely
bits 0 and 1._________________________
8. Computers that have the capacities to host multiple operating systems and
operate as a number of virtual machines and can substitute for several small
servers.________________
9. It is a handheld computer and popularly known as a palmtop.__________________
10.
These computers can be worn on the body and are often used in the
study of behavior modeling and human health. ________________________
3
Activity 3: MATCH ME
Direction: Match Column A to Column B and Column B to Column C. Blue pen for
Column A to Column B and Red Pen Column B to Column C.
Column A
Column B
Column C
It is intended to
be used on a single
location
Classification of
Computer
Are mobile computers
that are very handy to
use.
Types of Computer
It is also called mid-range
systems or workstations
Types of Personal
Computer
It has the capacity to host
multiple operating systems
It uses digital circuits and
are designed to operate
on two states, namely
bits 0 and 1.
What I Have Learned
Test 1. Multiple Choice. Select the letter of the best answer from among the given
choices.
1. What computer that is also known as Personal Computer?
b. Microcomputer
b. Mainframe Computer
c. Supercomputer
d. none of the above
2. What is the type of computer which are used by the majority of the people in their
daily lives?
b. Microcomputer
b. Mainframe Computer
c. Desktop Computer
d. all of the above
3. It can easily record everything from your signature, to your handwriting, to original
drawings directly to your computer.
b. Laptop
b. Digital Tablets
c. Notebook
d. all of the above
4. It is a small and portable compared to the immobile desktop computer.
b. Laptop
b. Netbook
c. Notebook
d. all of the above
5. What computer that is also much smaller, portable and very lightweight?
a. In-car Computer b. Netbook
c. Notebook
d. all of the above
6. It is essentially designed for surfing the net, while notebooks have different
features, including better operating systems, optical drives and more offline use.
a. In-car Computer b. Netbook
c. Mainframe
d. all of the above
7. What computer that is typically have a display screen with touch input and/or a
miniature keyboard and weighting less than 2 pounds (0.91 kg)?
a. In-car Computer b. Handheld Computer
c. Mainframe
d. all of the above
8. What computer which is referred to as the mid sized computers and they serve as
the same functions as the normal desktop computers?
a. Minicomputers
b. Handheld Computer
c. Mainframe
d. all of the above
9.What type of computer that is large in size, large in memory and powerful?
a. Minicomputer
b. Handheld Computer
c. Mainframe
d. all of the above
10. What type of computer that is used for problems requiring complex calculations?
a. Minicomputer
b. Supercomputer
c. Mainframe
d. all of the above
Test II. Direction: Identify the type of computer being described in the
following sentences and write your answer on space provided.
1. These are mobile computers that are very handy to use. ___________________
2. They are computers designed to provide services to client machines in a
computer network.____________________
3. They are also called mid-range systems or workstations.____________________
4. A computer with a microprocessor and its central processing unit._____________
5. They fall in the category of laptops, but are inexpensive and relatively
smaller in size.__________________________
6. A type of computer which is intended be used on a single location. ____________
7. They use digital circuits and are designed to operate on two states, namely
bits 0 and 1._________________________
8. Computers that have the capacities to host multiple operating systems and
operate as a number of virtual machines and can substitute for several
small servers.________________
9. It is a handheld computer and popularly known as a palmtop.__________________
10. These computers can be worn on the body and are often used in the study
of behavior modeling and human health. ________________________
What I Can Do
STUDENT ASSESSMENT:
Direction: Write down either location/venue or situation were each type of personal
computer is commonly used in our society. Write 5 each type of personal computer
and write it in your activity notebook.
CRITERIA FOR THE ACTIVITY
Accurate to task given
Precise on the exact type of
computer
Informative answer
TOTAL
Range: NO. OF CORRECT
ANSWER
4-5
3-4
2-3
1-2
PERCENTAGE
30
30
40
100
PERCENTAGE
30/40
20/30
10/20
0/10
SCORE
Lesson
COMPUTER BASIC
OPERATION
What’s In
In reference to the previous module, consider the figure below. Answer the
following questions based on your own understanding.
Activity 1: Venn Diagram
TYPES OF
COMPUTER
CLASSIFICATION
OF COMPUTER
TYPES OF
PERSONAL
COMPUTER
Guide Questions:
1.What is computer?
___________________________________________________________________
2. What are the different types of computer?
___________________________________________________________________
3. What are the different types of Personal Computer?
___________________________________________________________________
4. What are the classification of computer?
___________________________________________________________________
What I Need to Know
As you go through this module, you will be able to understand computer basic
operations. Readings and enhancement activities are provided to serve you as a
guide. All you need to do is to read carefully all the topics and apply the knowledge
you’ve gained through the distinct activities provided in this module. So keep going
and good luck!
LO 1. Plan and prepare for installation
1. Identify computer 5 basic operations.
2. Familiarize with the computer basic operations.
3. Define a computer and describe its primary operations.
What’s New
Activity 1: MULTIPLE CHOICE
Based your answer from the diagram below and write your answer in your activity
notebook. Write the letter only.
1. Which of the following function is not performed by computers?
a. Calculate data b. Compare data c. Analyze data d. Output data
2. Which of the following is soft output device?
a. Microphone b. Plotters c. Projectors d. Card Punchers
3. Identify the direct entry input device:
a. Keyboard b. Mouse c. OMR d. All of above
4. Which of the following unit does encoding?
a. Input Unit b. ALU c. CU d. Output Unit
5. The actual execution of instructions takes place in
a. Arithmetic Logical Unit b. Control Unit c. Memory d. Output Unit
6. The storage unit holds:
a. data to be processed b. intermediate result c. both of above d. none of above
7. The fastest and most close storage device to CPU is
a. Flash Memory b. RAM/ROM c. Registers d. Cache
8. After completion of processing, the final results are sent to the _____ before it
goes to output device.
a. Monitor b. Printer c. Storage d. ALU
9. Which of the following is not input unit device
a. Microphone b. OCR c. Projector d. Touch Screen
10. The unit that manages and co-ordinates the whole system is
a. Input Unit b. CPU c. ALU d. CU
What Is It
Guide Questions:
* What is Computer?
* What are the computer basic operation?
5 Basic Operations of a Computer System
Inputting
Storing
Processing
Outputting
Controlling
The internal structure of a computer looks like above:
Input unit:
Input unit links the external environment with the computer system. Data and
instruction must be entered to the computer before performing any competition. Data
or instructions can be entered through input devices.
eg. Key board, or any other input devices.
Input unit transferred this data into binary coded in short input unit performs the
following function:
It accepts data or instructions from external world.
It converts these instructions and data in computer acceptable form.
It supplies the converted instruction & data to the computer for further processing.
Output unit:
The job of output unit it is just the viewers of that any input unit it provides
information reasons of computation to the output of the world. Output unit links the
computer with the external world. A computer prepares results in binary code. Output
unit converts these results into human acceptable forms. In short perform the
following functions.
It accepts the result produced by the computer.
It converts these coded results to human acceptable form.
It supplies the converted to the outside world.
Storage unit:
Before actual processing start, data & instructions entered to the computer must be
stored inside the computer. Similarly, results produced by the computer are required
to be stored before being passed to the output unit. The intermediate result produced
by the computer must also be stored for further processing. In short the function of
storage unit:

It stores all the data to be process.

It stores intermediate results.

It stores final result are realizing an output device.
ALU:
ALU is the place where actual execution of the instructions takes places during the
processing operations. All calculations & comparisons are made in the ALU. The
data and instructions stored in the primary storage are transferred as where
required. Intermediate results are also transferred back to the ALU for the final
processing. After completion of processing the final results are send to storage units
from ALU.
Number of arithmetic & logical operation that a computer can perform is determined
by the design to perform the four basic arithmetic operations. They are +,-,*,/. The
logic operations like <,=,>.
Control unit:
ALU dose not know what should be done with the data likewise, output unit dose not
know when the result should be displayed. By selecting, interning and seeing to the
execution of the program the CU is able to maintain order and direct the operations
of the entire system CU doesn’t perform any actual processing on data yet it is
known as a central nervous system for the comforts of the computer.
It manages co-ordinates the entire system.
What’s More
Activity 2: FILL IN THE BLANKS
Select you answer from the box and fill-in the missing word.
Input Unit
Binary
External
Instruction
Data
Central
ALU CU
Processing
Output Unit
Computer
1._________ links the external environment with the computer system.
2.________ and _______ must be entered to the computer before performing any
competition.
3.___________ links the computer with the ___________world. A computer
prepares results in ___________ code.
4._______ is the place where actual execution of the instructions takes places during
the _____________operations.
5._______doesn’t perform any actual processing on data yet it is known as a
____________ nervous system for the comforts of the _________.
Activity 3: DRAW ME
Draw the Diagram on the Basic Computer Operations. Draw the Diagram in your
activity notebook/workbook. And explain the diagram below your drawing. You will
be graded based on the Rubrics given.
CRITERIA FOR THE ACTIVITY
Accurate to task given
Creatively draw the correct diagram
Persuasive answer
TOTAL
PERCENTAGE
30
30
40
100
SCORE
What I Have Learned
TEST I. Select you answer from the box and fill-in the missing word.
Input Unit
Binary
External
Instruction
Data
Central
ALU CU
Processing
Output Unit
Computer
1._________ links the external environment with the computer system.
2.________ and _______ must be entered to the computer before performing any
competition.
3.___________ links the computer with the ___________world. A computer
prepares results in ___________ code.
4._______ is the place where actual execution of the instructions takes places during
the _____________operations.
5._______doesn’t perform any actual processing on data yet it is known as a
____________ nervous system for the comforts of the _________.
TEST II.
Multiple Choice: Write your answer in the space provided.
1. Which of the following function is not performed by computers?
a. Calculate data b. Compare data c. Analyze data d. Output data
2. Which of the following is soft output device?
a. Microphone b. Plotters c. Projectors d. Card Punchers
3. Identify the direct entry input device:
a. Keyboard b. Mouse c. OMR d. All of above
4. Which of the following unit does encoding?
a. Input Unit b. ALU c. CU d. Output Unit
5. The actual execution of instructions takes place in
a. Arithmetic Logical Unit b. Control Unit c. Memory d. Output Unit
6. The storage unit holds:
a. data to be processed b. intermediate result c. both of above d. none of above
7. The fastest and most close storage device to CPU is
a. Flash Memory b. RAM/ROM c. Registers d. Cache
8. After completion of processing, the final results are sent to the _____ before it goes to
output device.
a. Monitor b. Printer c. Storage d. ALU
9. Which of the following is not input unit device
a. Microphone b. OCR c. Projector d. Touch Screen
10. The unit that manages and co-ordinates the whole system is
a. Input Unit b. CPU c. ALU d. CU
What I Can Do
STUDENT ASSESSMENT:
Label the diagram, draw the arrow and explain the basic computer operation.
INPUT
DEVICE
OUTPUT
DEVICE
MEMORY
UNIT
Write down your explanation legibly in not less than 200 words:
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
_________________________________________________________________
Summary
The knowledge and skills acquired by the learners in lesson one which is all about
understanding computers and in lesson two that discuss the computer basic operations can
be of help to them to augment personal income and become productive individuals. Upon
learning the fundamental concepts and skills, they are now ready to take and earn the
Computer System Servicing NC II National Certificate. The competencies learned in Computer
System Servicing can provide opportunities for the learners to be employed or put up their
own shop as computer technician.
Assessment: (Post-Test)
Multiple Choice. Select the letter of the best answer from among the given
choices.
1. What computer that is also known as Personal Computer?
a.Microcomputer
b. Mainframe Computer
c.Supercomputer
d. none of the above
2. What is the type of computer which are used by the majority of the people in their
daily lives?
a. Microcomputer
b. Mainframe Computer
c. Desktop Computer
d. all of the above
3. It can easily record everything from your signature, to your handwriting, to original
drawings directly to your computer.
a. Laptop
b. Digital Tablets
c. Notebook
d. all of the above
4. It is a small and portable compared to the immobile desktop computer.
a.Laptop
b. Netbook
c. Notebook
d. all of the above
5. What computer that is also much smaller, portable and very lightweight?
a. In-car Computer b. Netbook
c. Notebook
d. all of the above
6. It is essentially designed for surfing the net, while notebooks have different
features, including better operating systems, optical drives and more offline use.
a. In-car Computer b. Netbook
c. Mainframe
d. all of the above
7. What computer that is typically have a display screen with touch input and/or a
miniature keyboard and weighting less than 2 pounds (0.91 kg)?
a. In-car Computer b. Handheld Computer
c. Mainframe
d. all of the above
8. What computer which is referred to as the mid sized computers and they serve as
the same functions as the normal desktop computers?
a. Minicomputers
b. Handheld Computer
c. Mainframe
d. all of the above
9.What type of computer that is large in size, large in memory and powerful?
a. Minicomputer
b. Handheld Computer
c. Mainframe
d. all of the above
10. What type of computer that is used for problems requiring complex calculations?
a. Minicomputer
b. Supercomputer
c. Mainframe
d. all of the above
11. Which of the following function is not performed by computers?
a. Calculate data b. Compare data c. Analyze data d. Output data
12. Which of the following is soft output device?
a. Microphone b. Plotters c. Projectors d. Card Punchers
13. Identify the direct entry input device:
a. Keyboard b. Mouse c. OMR d. All of above
14. Which of the following unit does encoding?
a. Input Unit b. ALU c. CU d. Output Unit
15. The actual execution of instructions takes place in
a. Arithmetic Logical Unit b. Control Unit c. Memory d. Output Unit
16. The storage unit holds:
a. data to be processed b. intermediate result c. both of above d. none of above
17. The fastest and most close storage device to CPU is
a. Flash Memory b. RAM/ROM c. Registers d. Cache
18. After completion of processing, the final results are sent to the _____ before it
goes to output device.
a. Monitor b. Printer c. Storage d. ALU
19. Which of the following is not input unit device
a. Microphone b. OCR c. Projector d. Touch Screen
20. The unit that manages and co-ordinates the whole system is
a. Input Unit b. CPU c. ALU d. CU
Key to Answers
PRETEST AND POST TEST
1. A
2. C
3. B
4. A
5. C
6. B
7. B
8. A
9. C
10. B
11. B
12. D
13. D
14. A
15. A
16. C
17. B
18. C
19. C
20. D
LESSON 1 Activity 1A
1. Supercomputer
2. Mainframe
Computer
3. Minicomputer
4. Micro Computer
5. Personal Computer
6. Notebook
7. Palmtop
LESSON 1 Activity 1B
1. FAX
2. Ultra Sound
3. Pager
4. Calculator
5. X-ray
6. Robot
LESSON 1 Activity 2
1.
2.
3.
4.
5.
6.
7.
8.
9.
Tablet Computers
Servers
Minicomputers
Microcomputers
Netbook
Desktop
Digital Computers
Mainframe Computers
Personal Digital
Assistance
10.
10. Wearable
Computers
11.
LESSON 1 Activity 3
It is intended to
be used on a single
location
Classification of
Computer
Are mobile computers
that are very handy to
use.
Types of Computer
It is also called mid-range
systems or workstations
Types of Personal
Computer
It has the capacity to host
multiple operating systems
It uses digital circuits and
are designed to operate
on two states, namely
bits 0 and 1.
LESSON 2 Activity 1
1. B
2. D
3. D
4. A
5. A
6. C
7. B
8. C
9. C
10. D
LESSON 2 Activity 2
1. Input Unit
2. Data/ Instruction
3. Output Unit/External/Binary
4. ALU/ Processing
5. CU/Central/Computer
References
Department of Education. Information and Communications Technology: Learning
Material for Computer Hardware Servicing, 2013.
https://sisodiyanilesh.wordpress.com/2011/03/12/5-basic-operations-performed-bycomputer-system/
https://mcqsets.com/s/fundamentals/basic-operations-of-a-computer/
For inquiries and feedback, please write or call:
Department of Education – Bureau of Learning Resources (DepEd-BLR)
DepEd Division of Cagayan de Oro City
Fr. William F. Masterson Ave Upper Balulang Cagayan de Oro
Telefax:
((08822)855-0048
E-mail Address:
cagayandeoro.city@deped.gov.ph
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