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Introduction
to the Internet
Why are
you here?
Because the Internet is:
Revolutionizing education
Enhancing the way we do
business
Turning people into
life-long learners
Providing information for
all facets of life
Giving access to vast
opportunities
The
Internet is being used to...
Post information for the world
to see
Take virtual tours of museums,
cities, foreign countries
Give access to the
latest information available
Allow participation in global
projects
Bring experts to the classroom
Interact with people from all
over the world
The Basics
What is it?
How does it work?
How do I connect?
How to I acquire an E-mail
account?
What is
the Internet?
A means of exchanging
information
Computers
Computer Networks
People
A telephone network connecting
computers together
An Enabler--access to
everything
Links more than 60 million
people in 160 countries
Internet
growth
Amazing 10% growth per month
50% of traffic is educational
WWW is key to expansion
(GUI--Graphical User Interface) pictures
Web doubles every three months
E-mail represents 40% of web
use
Why the
Internet?
Born November 21, 1969
Advanced Research Projects
Agency (ARPA)
Department of Defense
UCLA
Stanford
USC at Santa Barbara
U of Utah
Internet
Design
Two major concerns
that the net be non-platform
specific
that the net be totally
redundant and fault tolerant
Fiber optic cable
1980--National Science
Foundation
1991--Public
What You
Can Do on the Internet?
E-mail
On-line conversation
Information Retrieval
Promote your business
Distribute information
Participate in public forums
Getting
Connected
Computer--RAM is important!!
32 megs is sufficient but the more the
better
Modem--determines speed in bps
(bits per second)
56K (standard today although
most telephone lines will NOT deliver 56K)
Telephone
Connection
Standard phone line in your
home is required to carry a minimum of 9600 and can go to 40-50+ bps
ISDN--ability to double
capacity (available but at an additional cost)
Cable modems--can go to 1 1/2 million bps
Web TV (Microsoft)
Software
Usually given to you by your
Internet provider
Each function of Internet has
a program
E-mail, FTP, Telnet, WWW
Browser
Web Browsers are integrated
programs
TCP/IP--universal language of the net
The URL
http://www.abc.com/programs/special/index.html
Uniform Resource Locator, the
address for a Web resource
The protocol specifies the
type of web resource (http://www.)
The Host name specifies the
server where the resource is located (abc.)
The type of server (.com)
The Directory name specifies a
particular part of the server (programs) (special)
The File name identifies the
actual document to be retrieved. Web pages are all .htm or .html, signifying
that they are created in the Web language HTML (Hyper Text Markup Language)
(index.html)
How people
get access--Internet Service Provider
Dial In Direct Connection
Commercial Gateway
Usually makes access
selections (point and click with mouse menu system)
Examples--AOL, Prodigy, CompuServe,
Errols
Dial In Direct Connection
Local Service Provider
Unlimited connection (you
must know how to navigate the web)--Infonet, Visinet, WHRO
E-Mail
A tool to send and receive
text messages over the Internet
Time zone independent
Fast--near instant delivery
Cheap--no long distance costs
Convenient--can attach
pictures, sounds, video clips, and even software
Much like letter but in a
brief, informal, conversational style
Send/receive through E-mail
software (Eudora)
Usually can send to web sites
Can get complicated through
different services but becoming more accessible
E-Mail
Attachments
Create files in a word
processing program
Write E-mail message and use
program to make attachments
Windows 95 had plug-ins for
various programs
Attachments
Can literally be any type of
text, graphic, audio, video, or executable file
Often compressed (zipped) in
order to transfer more quickly
Must be converted into a
special format in order to be properly received.
What can
you do with E-mail?
Interpersonal exchanges
Information collection
Collaborative problem solving
Gather information quickly and
conveniently
E-Mail
Address
Username (only thing that you
control)
@ at symbol
host your Internet provider
sub domain
domain
Read right to left--goes from
least specific to most specific
Common
Organizational Domains
Mail Servers in US
com Commercial
edu Educational
gov Government
mil Military
org Organization
net Network
int International
E-Mail
Addresses
Always in lower case
president@
Remember read right to left
csparks@whro.net (my E-mail
address)
Always put something in the
subject field
this is all that shows in
individual’s mail box
Free
E-Mail Accounts
www.juno.com
Free e-mail and software
Need computer and modem
www.hotmail.com
Free e-mail from Microsoft
What makes
a good web site?
What should be considered when
you evaluate a web site?
Create a list of items which
you feel should be considered to determine if a web site is appropriate for
the age level student with which you deal
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