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Computers: Information Technology in Perspective, 11e Larry Long and Nancy Long Chapter 3 Going Online Objectives Once you have read and studied this chapter, you will have learned:

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computers information technology in perspective 11e larry long and nancy long

Computers: Information Technology in Perspective, 11eLarry Long and Nancy Long

Chapter 3

Going Online

Copyright Prentice Hall, Inc.

objectives
Objectives
  • Once you have read and studied this chapter, youwill have learned:
    • The scope of the online world and some of its many opportunities, plus Internet concepts, including how to go online and the makeup of an Internet address.
    • How you can use Internet browsers to access a wealth of information on the Internet.
    • The scope of Internet resources and the various types of Internet applications, including the World Wide Web, FTP, e-mail, instant messaging, newsgroups, and videoconferencing.

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why this chapter is important to you
Why this chapter is important to you!
  • Learning how to go online will open many doors to information
  • Learning how to go online can change how you learn, shop, communicate, and work for the better
  • Learning how to go online to search for jobs could land you that dream job

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the internet
The Internet
  • The Internet is a network of networks
  • It began in 1969 as ARPAnet (Advanced Research Projects Agency)
  • No central authority and thus impossible to state the precise size
  • The Internet is not free just because you do not pay for it
  • When you go online you have access to billions of pages of information and resources, such as:
    • Research on just about any topic
    • Current weather anywhere in the world
    • Travel arrangements
    • Health information
    • Shopping for anything and everything
    • Services
    • And lots more…

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connecting to the internet
Connecting to the Internet
  • Channels carry digital signals between computers and over the Internet
  • Bandwidth is the number of bits a line can transmit per second
  • Broadband
    • High bandwidth
  • Narrowband
    • Low bandwidth

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narrowband
Narrowband
  • Dialup Service
    • Available to anyone with POTS
      • Plain old telephone service
      • Data transmissions are up to 56K bps

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broadband
Broadband
  • 15 to 30 times faster than narrowband
  • Broadband is always on
  • Broadband options
    • Cable
    • DSL
    • Satellite
    • Wireless

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the link to the internet
The Link to the Internet
  • Commercial Information Service
    • AOL is an example
    • Monthly service charge
    • Communications software needed
    • User ID and password

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the link to the internet9
The Link to the Internet
  • Internet Service Provider
    • Provides access to the Internet
    • Low-speed dialup or high-speed connection
    • ISPs:
      • Commercial Enterprises
      • Colleges
      • Churches

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tcp ip and packets
TCP/IP and Packets
  • TCP/IP is the communications protocol that permits data transmission over the Internet
  • Data is sent in packets
  • Each POP has an IP address for packet delivery

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going online without a pc
Going Online Without a PC
  • Go online with your TV
  • Go online with your game device
  • Go online with an Internet appliance
  • Going online with your cell phone

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retrieving and viewing information on the internet
Retrieving and Viewing Information on the Internet
  • To go online you need a client
  • Internet Explorer or Netscape is a client
  • You can give the browser a URL to find a site or search for a site

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the internet address url

http://www.annex.com/southwest/museum.htm

Document

Path (Directory or Folder)

Internet Address (Web site)

Means of access,

HyperText Transfer Protocol

The Internet Address: URL

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html putting the page together
HTML: Putting the Page Together
  • HTML is a scripting language
  • <HTML> </HTML>
    • Must be at beginning and end of the Web page
  • Head: <Head> </Head>
    • Includes: basic document info
  • Other HTML:
    • <Title></Title>
    • <Body BGCOLOR= “Beige”>
    • <H1></H1>
    • <P>

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internet browsers

Tool Bar

Menu Bar

Address Bar

Hyperlink

Status Bar

Internet Browsers

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concepts and features
Concepts and Features
  • Hyperlinks
    • Provide text, graphics, sound, or video links
    • Blue underlined fonts are unexplored
    • Magenta links have been previously accessed

www.microsoft.com

www.microsoft.com

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internet servers and addresses
Internet Servers and Addresses
  • HTTP: Hypertext Transfer Protocol
  • FTP: File Transfer Protocol
  • News: Newsgroups
  • Gopher: Gopher menu tree

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browsers plugins
Shockwave Player

Displays Web content

Flash Player

View Flash content

RealJukebox

Play and record MP3 music

LiquidPlayer

Play and record MP3 music

Read lyrics

Organize your music

RealPlayer

Listen to streaming audio

View streaming video

QuickTime

View QuickTime videos

Listen to music

iPIX

View an image from every direction

Acrobat Reader

Displays PDF documents

Browsers Plugins

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internet resources and applications
Internet Resources and Applications
  • Portals
  • Libraries
  • Online Magazines and Journals
  • Arts
  • Travel
  • Government
  • News
  • And more…

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finding resources
Use the Search button on the Internet Explorer Toolbar

Try multiple search engines on one query

Be aware of logical operators - AND, OR, and NOT

Search on a concept: e.g., “first ladies” rather than “Eleanor Roosevelt”

Set Bookmarks/Favorites

Search Engines

www.yahoo.com

www.infoseek.com

www.google.com

www.altavista.com

www.hotbot.com

Lots more…

Finding Resources

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internet applications
Internet Applications
  • WWW
    • Internet system
      • User friendly
      • Multimedia
      • Interactive
    • FTP
      • Download files
      • Upload files
    • Webcasting
      • Audio signals

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communication with people over the net e mail
Communication with People over the Net: E-Mail

Menu Bar

Toolbar

Shortcuts

Inbox

Message

Attachment

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communication with people over the net audio mail
Communication with People over the Net: Audio Mail

Menu Bar

Video

Text Chat

Sound Control

Microphone Control

Type Here

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communication with people over the net
Communication with People over the Net
  • USENET Newsgroups
    • Bulletin boards
    • Threads
  • Mailing lists or listservs
    • Subscription service
    • Push technology

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communication with people over the net internet relay chat irc
Communication with People over the Net: Internet Relay Chat: IRC

Typed messages

People online

Format choices

Type message

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instant messaging internet telephone
Instant Messaging & Internet Telephone

Private

Messages

Video

Audio

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communication with people over the net cybertalk and netiquette
Avoid ALL CAPS

Never send spam

Be sensitive

Never send personal information via e-mail

Be patient

Avoid correcting e-mail errors, such as spelling

Honor privacy

Think twice about sending large files

Never forward a virus

Use antivirus software

Communication with People over the Net: Cybertalk and Netiquette

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cruising the net

.com

.edu

.firm

.gov

.int

.mil

.net

.org

Cruising the Net

Commercial

Education

Businesses

Government

International

Military

Network Resources

Nonprofit Organizations

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summary
Summary
  • The Internet
  • Internet Browsers
  • Internet Resources and Applications

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