1. Computers
© 2005 Prentice-Hall, Inc.
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2. Computers, Information Technology, and You
© 2005 Prentice-Hall, Inc.
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3. Computers Computers, Information Technology, and You
Objectives
Achieving IT competency
The Internet and its challenges
The past, present, and future of IT
Global village
Categories of computers
Capabilities and limitations of computers
© 2005 Prentice-Hall, Inc.
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4. Computers Computers, Information Technology, and You
Information Technology (IT)
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5. Computers Computers, Information Technology, and You
Defining Information Technology Competency
Knowing the language of computers
Being able to use a computer
Being able to surf the Internet
Knowing the impact computers have and have had on society
Being an intelligent consumer of computers and computer-related products
© 2005 Prentice-Hall, Inc.
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6. Computers Computers, Information Technology, and You
The Internet and Its Challenges
Virtual frontier
Information Superhighway
The Net
Telecommuting
© 2005 Prentice-Hall, Inc.
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7. Computers Computers, Information Technology, and You
Information Technology in Our Lives
Yesterday:
Computers became smaller
Computers became less expensive
Computers are now everywhere
© 2005 Prentice-Hall, Inc.
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8. Computers Computers, Information Technology, and You
Information Technology in Our Lives
Today:
Computers are used at home
Computers are used for play
Computers are used at work
Computers are used at school
© 2005 Prentice-Hall, Inc.
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9. Computers Computers, Information Technology, and You
Information Technology in Our Lives
Tomorrow:
Digital Convergence
Speech Recognition Software
Video-on-demand
Broadband
Cashless Society
Electronic Money
Electronic Wallet
© 2005 Prentice-Hall, Inc.
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10. Computers Computers, Information Technology, and You
Information Technology in Our Lives
Tomorrow:
Shopping – anywhere, anytime
Telemedicine
High-Tech Voting
Education
National Database
Telecommuting
© 2005 Prentice-Hall, Inc.
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11. Computers Computers, Information Technology, and You
Global Village
Computer Network
Upload – send a file to another computer
Download – receive a file from another computer
Surfing the Net
World Wide Web (the Web)
© 2005 Prentice-Hall, Inc.
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12. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Personal Computers
Wintel PCs
Windows operating system
Platform
© 2005 Prentice-Hall, Inc.
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13. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Notebook Computers
Laptop PCs
Portable
Port replicator
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14. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Desktop Computers
System unit
Stationary
Windows operating system
© 2005 Prentice-Hall, Inc.
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15. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Configuring a PC
System unit
Keyboard
Mouse or appropriate substitute
Monitor
© 2005 Prentice-Hall, Inc.
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16. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Configuring a PC
Printer
Hard disk
CD-RW and/or DVD+RW
Microphone
Speakers
© 2005 Prentice-Hall, Inc.
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17. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Wearable Computers
Worn by the user
Customized for different professions
© 2005 Prentice-Hall, Inc.
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18. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Handheld Computers
Portable
Personal Digital Assistant (PDA)
Stylus
Pen-based computing
Personal Information Management (PIM)
Gaming
Text-to-speech software
© 2005 Prentice-Hall, Inc.
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19. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Workstations
Speed
Large-screen color monitors
Specialized point-and-draw devices
Add-on keyboards
© 2005 Prentice-Hall, Inc.
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20. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Server Computers
Link and support client computers on a network
Enterprise systems
© 2005 Prentice-Hall, Inc.
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21. Computers Computers, Information Technology, and You
Personal Computers to Supercomputers
Supercomputers
Handle applications that require little I/O but lots of computing speed
Simulations
Weather forecasting
Study of how proteins are formed
Advanced graphics used in movies
Analysis of large amounts of data
Simulation of child birth
© 2005 Prentice-Hall, Inc.
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22. Computers Computers, Information Technology, and You
Computer System Capabilities
Data – input that goes into the computer
Information – output that comes from the computer
© 2005 Prentice-Hall, Inc.
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23. Computers Computers, Information Technology, and You
The Computer’s Strengths
Speed
Accuracy
Consistency
Reliability
Communications
Memory Capability
© 2005 Prentice-Hall, Inc.
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24. Computers Computers, Information Technology, and You
Comparing Computers and Humans
Human output is slower than computer output
Humans recognize patterns quicker than computers
Computers are 100% accurate in recalling stored information
Humans think, computers don’t
© 2005 Prentice-Hall, Inc.
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25. Computers Chapter 1 - Computers, Information Technology, and You
Lesson Summary
Achieving IT competency
The Internet and its challenges
The past, present, and future of IT
Global village
Categories of computers
Capabilities and limitations of computers
© 2005 Prentice-Hall, Inc.
Slide 25