2. Objectives Overview
Explain why computer
literacy is vital to
success in today’s world
Define the
term, computer, and
describe the
relationship between
data and information
Describe the five
components of a
computer
Discuss the advantages
and disadvantages that
users experience when
working with
computers
Define the
term, network, and
identify benefits of
sharing resources on a
network
Discuss the uses of the
Internet and World
Wide Web
See Page 3
for Detailed Objectives
Discovering Computers 2012: Chapter 1
2
3. Objectives Overview
Distinguish between system software
and application software
Differentiate among types, sizes, and
functions of computers in each
category
Explain how home users, small
office/home office users, mobile
users, power users, and enterprise
users each interact with computers
See Page 3
for Detailed Objectives
Describe the role of each element in an
information system
Discuss how society uses computers in
education, finance, government, health
care, science, publishing, travel, and
manufacturing
Discovering Computers 2012: Chapter 1
3
4. A World of Computers
• Computers are everywhere
Pages 4 - 5
Figure 1-1
Discovering Computers 2012: Chapter 1
4
5. What Is a Computer?
• A computer is an electronic device, operating
under the control of instructions stored in its own
memory
Collects
data
(input)
Processing
Produces
information
(output)
Information Processing Cycle
Page 6
Discovering Computers 2012: Chapter 1
5
6. What Is a Computer?
Page 6
Figure 1-2
Discovering Computers 2012: Chapter 1
6
7. The Components of a Computer
• A computer contains many electric, electronic, and
mechanical components known as hardware
Input Device
Output Device
• Allows you to enter data and instructions into a computer
• Hardware component that conveys information to one or more people
System Unit
• Case that contains the electronic components of the computer that
are used to process data
Storage Device
• Records (writes) and/or retrieves (reads) items to and from storage
media
Communications
Device
• Enables a computer to send and receive data, instructions, and
information to and from one or more computers or mobile devices
Pages 6 - 8
Discovering Computers 2012: Chapter 1
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8. The Components of a Computer
Page 7
Figure 1-3
Discovering Computers 2012: Chapter 1
8
9. Advantages and Disadvantages
of Using Computers
Advantages of
Using Computers
Speed
Health Risks
Reliability
Violation of Privacy
Consistency
Public Safety
Storage
Impact on Labor Force
Communications
Pages 9 - 10
Disadvantages of
Using Computers
Impact on Environment
Discovering Computers 2012: Chapter 1
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10. Advantages and Disadvantages
of Using Computers
• Green computing involves reducing the electricity
consumed and environmental waste generated when
using a computer
• Strategies include:
–
–
–
–
Page 10
Recycling
Regulating manufacturing processes
Extending the life of computers
Immediately donating or properly disposing of replaced computers
Discovering Computers 2012: Chapter 1
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11. Categories of Computers
Personal computers
Mobile computers and mobile devices
Game consoles
Servers
Mainframes
Supercomputers
Embedded computers
Page 19
Discovering Computers 2012: Chapter 1
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12. Personal Computers
• A personal computer can perform all of its input,
processing, output, and storage activities by itself
• Two popular architectures are the PC and the
Apple
– Desktop computer
Pages 19 - 20
Figures 1-15 - 1-16
Discovering Computers 2012: Chapter 1
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13. Mobile Computers and Mobile Devices
Mobile
Computer
Mobile
Device
Personal computer you can
carry from place to place
Examples include notebook
computers, laptop
computers, netbooks, ultrathins, and Tablet PCs
Pages 20 - 23
Computing device small
enough to hold in your hand
Examples include smart
phones and PDAs, e-book
readers, handheld
computers, portable media
players, and digital cameras
Discovering Computers 2012: Chapter 1
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14. Mobile Computers and Mobile Devices
Notebook computer
Tablet PC
Smart phones and PDAs
E-book reader
Pages 20 - 22
Figures 1-17 – 1-20
Discovering Computers 2012: Chapter 1
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15. Mobile Computers and Mobile Devices
Handheld computer
Portable media player
Digital camera
Pages 22 - 23
Figures 1-21 – 1-23
Discovering Computers 2012: Chapter 1
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16. Game Consoles
• A game console is a
mobile computing
device designed for
single-player or
multiplayer video
games
Page 24
Figure 1-24
Discovering Computers 2012: Chapter 1
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17. Servers
• A server controls access
to the
hardware, software, an
d other resources on a
network
– Provides a centralized
storage area for
programs, data, and
information
Page 25
Figure 1-25
Discovering Computers 2012: Chapter 1
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18. Mainframes
• A mainframe is a
large, expensive, powerf
ul computer that can
handle hundreds or
thousands of connected
users simultaneously
Page 25
Figure 1-26
Discovering Computers 2012: Chapter 1
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19. Supercomputers
• A supercomputer is the fastest, most powerful
computer
– Fastest supercomputers are capable of processing
more than one quadrillion instructions in a single
second
Page 25
Figure 1-27
Discovering Computers 2012: Chapter 1
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20. Embedded Computers
• An embedded computer is a special-purpose
computer that functions as a component in a
larger product
Consumer
Electronics
• Mobile and digital
telephones
• Digital televisions
• Cameras
• Video recorders
• DVD players and
recorders
• Answering
machines
Page 26
Home Automation
Devices
Automobiles
• Thermostats
• Sprinkling systems
• Security
monitoring systems
• Appliances
• Lights
• Antilock brakes
• Engine control
modules
• Airbag controller
• Cruise control
Process Controllers
and Robotics
• Remote monitoring
systems
• Power monitors
• Machine
controllers
• Medical devices
Discovering Computers 2012: Chapter 1
Computer Devices
and Office Machines
• Keyboards
• Printers
• Faxes
• Copiers
20
22. Elements of an Information System
Hardware
Software
People
Page 27
Data
Procedures
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23. Elements of an Information System
Page 27
Figure 1-29
Discovering Computers 2012: Chapter 1
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24. Examples of Computer Usage
Home User
• Personal financial
management
• Web access
• Communications
• Entertainment
Pages 28 – 31
Figures 1-30 – 1-32
Small Office/Home
Office User
• Look up information
• Send and receive e-mail
messages
• Make telephone calls
Discovering Computers 2012: Chapter 1
Mobile User
• Connect to other computers
on a network or the Internet
• Transfer information
• Play video games
• Listen to music
• Watch movies
24
25. Examples of Computer Usage
Power User
• Work with multimedia
• Use industry-specific
software
Pages 31 – 32
Figures 1-33 – 1-34
Enterprise User
• Communicate among
employees
• Process high volumes
of transactions
• Blog
Discovering Computers 2012: Chapter 1
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26. Computer Applications in Society
Education
Finance
Government
Health Care
Pages 34 - 36
Figures 1-36 – 1-39
Discovering Computers 2012: Chapter 1
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29. Summary
Basic computer
concepts
Components of a
computer
Many different
categories of
computers, computer
users, and computer
applications in society
Page 39
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30. Chapter 1
Basic Introduction to Computers
Discovering
Computers 2012
Your Interactive Guide
to the Digital World
Chapter 1 Complete
32. The Challenge Box
• Group yourselves into 5
• Create 4 questions based on the previous lessons
(identification or enumeration questions –
1/8sheet of y.p. per question, always put your
group number on the upper right corner of the
paper )
• At the back of the portion of the question, put the
number which corresponds to the number of the
other group.
Discovering Computers 2012: Chapter 1
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33. Scoring:
• Each question answered correctly (identified correctly) by
any member of the group is equivalent to 2 points
• After the question was answered, another member will
give an example (minimum of 2 examples) of the
application of the answered question ( 3 points)
• After the group have been identified the answers and gave
their examples, they will give a number to the
instructor, that number will depend on the range given by
the instructor to choose the next group to be on the hot
seat!
• A follow up questions may be thrown to the answering
group by any group from the class.
Discovering Computers 2012: Chapter 1
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