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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 individualís 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

 
This page was updated on:  04/10/02