ACTIVITY SHEET – G9 Regular

TLE – COMPUTER SYSTEM SERVICING (CSS)

Week # 6

Name of Learner: ___________________________ Date: ________________

Grade/Section: ___________________________ Teacher: ________________

Subject: ___________________________ Activity No. ________________

Most Essential Learning Competency (MELC):

Multi Media Storage

 Video cards

 Sound Cards

 Graphical User Interface

MOTIVATION:
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.

PRESENTATION OF LESSON:

Introduction:

What I need to know?

 Understanding computers.
 Identify the different types of computer and devices
 Familiarize with the classification of computer

What’s new?
Activity 1. A. Choose the answers and fill-in the missing letter below:

Micro Personal Mini Mainframe

Palmtop Super Notebook

General Purpose Computers are …

 1. _ u _ _ _ Computer.

2. M _ _ _ f _ _ _ _ (Large) Computer.

3. M _ _ _ (Medium) Computer.

4. M _ _ _ _ (Small) Computer.

5. P _ _ _ _ _ _ _ 6. _ _ t _ _ _ _ _ 7. P _ _ _ _ _ p
Computer Computer Computer

B) Choose the answers and fill-in the missing letter below:

Robot X-Ray Fax

Pager Calculator Ultra

Special Purpose Computers are …

 1. F__

_ l _ _ _ Sound.

2.

3. P____

4. C____l____

5. _-R__

6. R____

Development:

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

What’s in?
Computers are everywhere and everyone is using them! Computers are in our cars, our
kitchens, our living rooms, our stores and, most importantly, in our workplaces. They are
used to communicate, to play, and to make everyday tasks easier (once you know how to
use them!). The ability to use a computer will enhance your ability to not only keep in touch
with friends and family but it will also increase your ability to find and keep a job

Notes to the Teacher

Prerequisites: Basic computer literacy,

Objective: To gain basic familiarity with computer parts and its functions.
What is it?
WHAT IS A COMPUTER? An electronic device that accepts data (input), manipulates the data (process), produces
information based on the manipulation (output) and stores the results (storage).

WHY WE USE COMPUTERS TO DO WORK WE COULD DO WITHOUT A COMPUTER?

Speed: Computers can process data much faster than we can.

Accuracy/ Computers don’t get sick (without help!), they are not Reliability: distracted by loving or hating you,
they don’t care what you look like etc… Memory: Computers are able to store and recall instantaneously, huge
amounts of data

5 BASIC COMPUTER SYSTEM COMPONENTS

(1) Input: A device we use to put information into the computer. List as many as we can think of.

(2) Output: A device we use to see the results of the computer’s manipulation of the data we input.
List as many as we can think of.

***How many devices can we think of that are both input and output.

(3) Central Processing Unit (CPU=Control Unit and Arithmetic Logic Unit): Control Unit interprets the
instructions (traffic cop), Arithmetic Logic Unit performs the arithmetic and logical functions (addition,
subtraction, multiplication, division, equals, not equal, equal to or greater than, equal to or less than,
greater than, less than…)

(4) Memory. Memory is what makes the computer so darned fast - the ability to go from point A to point Q
without having to pass through B,C,D,E, etc. in order. • RAM (Random Access Memory RAM s is where the
computer holds data while it is needed for processing. It is volatile in that it loses its contents when the machine
is turned off. • ROM (Read Only Memory): a set of chips that contain instructions that help a computer prepare
for processing tasks. These instructions are permanent. The only way to change them is to remove the chips and
replace them.

(5) Storage: Hard Drive, Floppy Disk Drive, CD drive, Memory Sticks, etc… Discuss pros and cons of each storage
method.

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.

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

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

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

Engagement:

What’s more?
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?

Direction: Write down either location/venue or situation were each type of personal computer is commonly
used in our society.
 1. Desktop-

2. Laptop

3. Netbook

4. PDA

5. Tablet Computer

6. Wearable Computer

Assimilation:

What I have learned?

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

REFLECTION:
Direction: Write your personal insights about the lesson using the prompts below.
I understand that _____________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
I realize that _________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
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_________________________________________________________________
_________________________________________________________________

____________________________
(Parent Signature over Printed Name)

Checked by:
________________________________
(Subject Teacher over Printed Name)