1. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
Multimedia Literacy
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.

2. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
Learning Objectives
Define Multimedia and describe why it is effective, and explain how Multimedia will be important to life in the twenty-first century
Show how Multimedia is changing
Show how the use of Multimedia is growing in business, industry, homes, online services, and education
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 2

3. Learning Objectives (cont.)
Identify and define the components of a Multimedia PC
Define the Internet and the World Wide Web and understand how they provide access to multimedia resources on a worldwide basis
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 3

4. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
Overview
What Is Multimedia?
Why Is Multimedia Important?
How Fast is Multimedia Growing?
How Is Multimedia Changing the World?
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 4

5. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
Overview (cont.)
Who Needs to Know About Multimedia?
What Is a Multimedia PC?
What Is the Internet?
What Is the World Wide Web?
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 5

6. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
What Is Multimedia?
Multimedia is the use of a computer to present and combine text, graphics, audio, and video with links and tools that let the user navigate, interact, create, and communicate
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 6

7. Why Is Multimedia Important?
A fast emerging basic skill
Adds dimensions
Is a dynamic experience
Allows cross-referencing through linking
Information Superhighway
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8. Multimedia Is Highly Effective
People retain
20% of what they see
30% of what they hear
50% of what they see and hear
80% of what they see, hear, and do simultaneously
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 8

9. How Fast Is Multimedia Growing?
At the end of the twentieth century nearly two-thirds of U.S households have home computers
Digital divide is narrowing
eMarketer forecasts 350 million Internet users by 2003
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 9

10. How Fast Is Multimedia Growing? (cont.)
Multimedia Growth is fueled by:
Advances in technology
Price wars
New tools enabling more people to become developers
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11. How Is Multimedia Changing the World?
Mergers and Alliances
Telecommuting
Home Shopping
Business and Advertising
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12. How Is Multimedia Changing the World? (cont.)
Electronic Publishing
Teaching and Learning
Mass Media
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13. Who Needs to Know About Multimedia?
Who needed to know how to read books after the printing press was invented?
Who needed to know how to drive cars after highways got built?
Who needed to know how to call someone when telephones were invented?
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 13

14. Who Needs to Know About Multimedia? (cont.)
Anyone who plans to learn, teach, work, play, govern, serve, buy, or sell in the information society needs to know about multimedia
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 14

15. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
What Is a Multimedia PC?
RAM and MB (megabytes)
Byte is the unit of measure for computer memory
Processor and MHz
Hertz is one instruction cycle per second
Hard Drive
Magnetic storage device
Measured in MB
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16. What is a Multimedia PC? (cont.)
CD-ROM
Can hold appr. 680 MB of data
DVD
Can hold up to 17 GB of data
Can also play back CD’s
8-Bit and 16-Bit Sound
A stream of bits represents the sound wave
The more bits, the higher the dynamic range of the music
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 16

17. What is a Multimedia PC? (cont.)
Synthesizer, Wavetable, and MIDI Playback
MIDI encodes performance information
MIDI often involves external equipment
MIDI synthesizer allows playback without external equipment
Wavetable contains numbers that describe the sound
MPEG
Digital video standard
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 17

18. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
What is the Internet?
Worldwide connection of computers that use the Internet Protocol (IP) to communicate
IP was invented for the U.S. Department of Defense Advanced Research Projects Agency (ARPA)
No central computer is in control
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 18

19. What is the Internet? (cont.)
Every computer has a unique IP address
Domain Name System (DNS) is an alphabetic translation scheme for IP addresses
Top-level domains and country codes are predefined
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20. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
Top-level Domains
.edu educational
.com commercial
.gov government
.mil military
.net network support centers
.org other organizations
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21. Seven New Top-level Domains
.aero air-transport industry
.biz business
.coop cooperatives
.info all uses
.museum museums
.name individuals
.pro professions
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22. What Is the World Wide Web?
Networked hypertext system that allows documents to be shared over the Internet
Developed at European Particle Physics Center (CERN) in Switzerland
Original purpose was to make it easier for researchers to collaborate
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 22

23. (c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved.
Hypertext
Coined by Ted Nelson (1965)
Text is linked
Links are clickable
Computer launches the object associated with the link
Adds a new dimension – hyper
Web Browser is a graphical user interface to read hypertext documents
(c) 2001 by The McGraw-Hill Companies, Inc. All rights reserved. 23