This my Computer Applications Technology eBook, everyone is allowed to view it.

1. 2016
Author
EDWIN MALEBE
201436093
Introduction to Computers

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TABLE OF CONTENT
1. Systems Technologies: Introduction to Computers........................................................................1
1.1 A Computer.............................................................................................................................1
1.2 For more information, please visit the Google Site below .....................................................1
2. Overview of the different types of the computer ..........................................................................2
2.1 Micro Computer......................................................................................................................2
2.2 Personal Computer .................................................................................................................2
2.3 Laptop .....................................................................................................................................3
2.4 Tablet ......................................................................................................................................3
2.5 Mini Computer........................................................................................................................3
3. Computer Components...................................................................................................................4
3.1 Hardware Components...........................................................................................................4
3.2 Electronic device: - uses electronic signals.............................................................................4
3.3 Hardware Components...........................................................................................................4
4. Advantages and Disadvantages of a Computer..............................................................................5
4.1 Advantages of computers.......................................................................................................5
4.2 Disadvantages of computers...................................................................................................5
4.3 A video of Advantages and Disadvantages of a Computer.....................................................5
5. Computer Management .................................................................................................................6
5.1 Concepts of data and information..........................................................................................6
5.1.1 Data.................................................................................................................................6
5.1.2 Information .....................................................................................................................6
5.2 Data vs Information ................................................................................................................6
6. Online Assessments ........................................................................................................................7
6.1 Google Form Assessment........................................................................................................7
6.2 Today’s Meet ..........................................................................................................................7
6.3 Padlet ......................................................................................................................................8
6.4 Kahoot.....................................................................................................................................8
6.5 Socrative..................................................................................................................................8
7. Rubrics.............................................................................................................................................9
8. References ....................................................................................................................................10

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LIST OF FIGURES
Figure 1: A picture of a Computer (PC)..................................................................................................1
Figure 2: A picture of Google Site ..........................................................................................................1
Figure 3: A Micro-Computer ..................................................................................................................2
Figure 4: A picture of a Personal Computer ..........................................................................................2
Figure 5: A picture of a Laptop...............................................................................................................3
Figure 6: A Tablet Computer..................................................................................................................3
Figure 7: Mini Computer ........................................................................................................................3
Figure 8: A picture of Hardware Components.......................................................................................4

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LIST OF TABLES
Table 1: For More information ..............................................................................................................3
Table 2: Advantages and Disadvantages...............................................................................................5
Table 3: Rubric one.................................................................................................................................9
Table 4: Rubric two ................................................................................................................................9

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Lesson Outcomes
 Define Hardware and Software components and give
examples.
 Describe the difference between Hardware and Software
Components
 Define what a computer is
 Identify different types of a computer
 List advantages and disadvantages of a Computer
 Describe the functions of Hardware and Software
Components

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Systems Technologies: Introduction to Computers
1.1 A Computer
It is an electronic device which is capable of receiving information (data) in a particular
form and of performing from and of performing a sequence of operations in
accordance with a predetermined but variable set of procedural instructions(program)
to produce a result in the form of information or signal.
Figure 1: A picture of a Computer (PC)
You probably already know that you can use a computer to type documents, send
email, play games, and browse the web. You can also use it to edit or create
spreadsheets, presentation, and even videos.
1.2 For more information, please visit the Google Site below
Figure 2: A picture of Google Site
https://sites.google.com/site/catmethodology/website-builder

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Overview of the different types of the computer
 Multi-purpose devices such as
 Personal Computer, Mini Computer, Micro Computer Laptop and
Tablet.
2.1 Micro Computer
Is a small, relatively inexpensive computer with a microprocessor as its central
processing unit (CPU)
Figure 3: A Micro-Computer
2.2 Personal Computer
A personal Computer (PC) is a small, relatively inexpensive computer designed for
an individual user.
Figure 4: A picture of a Personal Computer
https://sites.google.com/site/catmethodology/website-builder

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2.3 Laptop
Figure 5: A picture of a Laptop
A Laptop, also called Notebook is a portable personal computer with a clamshell
form factor, suitable for mobile use.
2.4 Tablet
Figure 6: A Tablet Computer
A Tablet computer, commonly shortened to tablet, is a small mobile computer with a
touchscreen display, circuitry and a battery in a single device.
2.5 Mini Computer
Figure 7: Mini Computer
A Computer of medium power, more than a microcomputer but less than a
mainframe.
Please Note:
There’s more information
on GOOGLE SITE
https://goo.gl/83aajT
Table 1: For More information

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Computer Components
3.1 Hardware Components
 Input devices (a keyboard, Mouse or microphone)
 Memory (to store data)
 Processing device (Central Processing Unit (CPU))
 Output device (a monitor or a printer)
3.2 Electronic device: - uses electronic signals
 Input- entering data
 Operating- manipulating data
 Output- sending out/retrieving information
3.3 Hardware Components
Computer hardware (usually simply called hardware when a computing context is
implicit) is the collection of physical elements that constitutes a computer system.
 Monitor
 Mouse
 Keyboard
 Hard Disk Drive
 Graphic Cards
 Sound Cards
 Motherboard
Figure 8: A picture of Hardware Components

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Advantages and Disadvantages of a Computer
Table 2: Advantages and Disadvantages
4.1 Advantages of computers 4.2 Disadvantages of computers
a) It is the fastest medium of
communication rendering postal
and telegraphic communication
b) Through computer your
messages can reach any part of
the world using internet facilities.
c) You can download any amount of
material through computer.
d) All your arithmetic problems can
be easily sorted out through
computer.
e) Through video conferencing, you
cannot only see each other but
also talk with anybody living in
any part of the world.
a) Lack of physical activity
b) Causes headache
c) Strains the eyes and causes poor
eye sight
d) Makes you vulnerable to cyber
crimes
e) Time wastage while doing
unproductive activities
4.3 A video of Advantages and Disadvantages of a Computer
Long URL
https://www.youtube.com/watch?v=Bkz3PXDdyyI

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Computer Management
5.1 Concepts of data and information
5.1.1 Data
The term data refers to factual information especially that used to analysis and
based on reasoning or calculation. Data itself has no meaning, but becomes
informative hen it is interpreted.
5.1.2 Information
Information is a collection of facts or data that is communicated. However, in many
contexts they are considered and are used as synonyms.
5.2 Data vs Information
Data are calculated and processed on a daily basis through computers in business, at
home, and in education. Data are essentially the raw facts that are usually typed into
a computer. We call these “raw” facts due to them being unorganized. They can come
in any form from audio and visual, to text and numerical. When the data is entered into
the computer that is considered input. The computer calculates the data and splits out
the information. Since this information is the output, it is considered information
processing. Data can also come in other forms including figures, experiments, and
surveys. Most everything that is entered into a computer becomes data, which is why
this is so vital to understanding computers and how they operate. Information is form
of knowledge and computers calculate detailed information.

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Online Assessments
6.1 Google Form Assessment
https://goo.gl/forms/32Un6gJP7SK2EhEu1
6.2 Today’s Meet
https://todaysmeet.com/IntroductionToComputers

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6.3 Padlet
https://padlet.com/mothekwana/CAT
6.4 Kahoot
Game Pin: 524093
6.5 Socrative
Room Name: MALEBE
https://b.socrative.com/login/student/

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Rubrics
Table 3: Rubric one
Category 5-4 3 2 1
Writing There are no
grammatical
mistakes in the
brochure
There are no
grammatical
errors after
feedback
There are 1-2
grammatical
mistakes
There are several
grammatical
errors
Attractiveness
and Organization
Formatting and
well organized
Has attractive
formatting and
well organized
The brochure has
well organized
information
The brochure’s
formatting and
organization of
material are
confusing.
Graphic Graphics go well
with the texts
and there is good
mix of texts.
Graphics go well
with the texts
but there are so
many that
distracts
Graphics go well
with the texts,
but there are too
few.
Graphics do not
go with the
accompanying
text
Content-
Accuracy
All facts are
accurate
90-99 percent of
the facts are
accurate
80-90 % of the
facts are
accurate
Fewer than 70%
of the facts are
accurate
Table 4: Rubric two
Writing Process Level 4 Level 3 Level 2 Level 1
Pre-Writing Pre-writing is
extensive and
organization is
evident.
Is apparent and
organization is
somewhat
evident. There
are three or
fewer points.
There is one-
word sentence,
list few points.
No evidence
writing.
Drafting Draft is through
extension of
writing.
Draft
demonstrate a
reasonable
connection.
Draft
demonstrate a
vague or no
connection to
writing.
No draft
completed
Graphic Graphics go well
with the texts
and there is good
mix of texts.
Graphics go well
with the texts
but there are so
many that
distracts
Graphics go well
with the texts,
but there are too
few.
Graphics do not
go with the
accompanying
text
Content-
Accuracy
All facts are
accurate
90-99 percent of
the facts are
accurate
80-90 % of the
facts are
accurate
Fewer than 70%
of the facts are
accurate

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References
Beebe, Maria A.., K.M Koukaou, B.O Oyeyika and M. Rao, eds (20013) IT Opportunities and Higher ED
Youtube
https://www.youtube.com/watch?v=Bkz3PXDdyyI
“The Kenya ICT Trust Fund” Republic of Kenya
Treanor, Brian, ICT: Levinas, Marcel, and the contemporary debate, Fordham University Press, 2006,
p.41
Klein, Ernest, Components of a computer, Vol II, Elsevier publishing company, Amsterdam, 1969,
p.1317
Saeed, John, Semantics, Blackwell, p. 12, ISBN 0-631-22693-1