ON LINE ON LINE INFORMATIONINFORMATION

History of the InternetHistory of the Internet

Where Did It All Begin?Where Did It All Begin?

The World Wide Web The World Wide Web began in Geneva, began in Geneva, SwitzerlandSwitzerland In one of the largest In one of the largest

scientific laboratories in scientific laboratories in the world.the world. The laboratory was called The laboratory was called

CERN (Counseil European CERN (Counseil European Pour la Recherche Pour la Recherche Nucleaire – Nucleaire – European European Laboratory for Particle PhysicsLaboratory for Particle Physics))

What does WWW stand What does WWW stand for?for?

WWorld orld WWide ide WWebeb The Internet is a The Internet is a

“World Wide” “World Wide” networknetwork

What is the Internet?What is the Internet?

The world’s largest The world’s largest computer network.computer network.

A collection of local, A collection of local, regional and national regional and national computer networks.computer networks.

The Internet is linked The Internet is linked together with other together with other networks to exchange networks to exchange data and distribute data and distribute processing tasks.processing tasks.

Created in 1987 as we Created in 1987 as we know it todayknow it today

What is a Network?What is a Network?

Two or more Two or more computers that are computers that are connected for the connected for the purpose of sharing purpose of sharing information.information.

What is ARPANET?What is ARPANET?

First network developed First network developed in early ’60’s and ’70’s by in early ’60’s and ’70’s by scientists and military scientists and military expertsexperts

Allowed them to share Allowed them to share information and research information and research data over long distancesdata over long distances

An experimental network An experimental network designed to see how well designed to see how well distributed networks distributed networks workwork

What is a LAN?What is a LAN?

LLocal ocal AArea rea NNetwork. etwork. These computers are These computers are nearnear

each other sharing each other sharing informationinformation

What is a WAN?What is a WAN?

WWide ide AArea rea NNetworketwork These computers are in These computers are in

different geographical different geographical sites.sites.

What is a Modem?What is a Modem?

A A MOMO-dulator -dulator DEDE--

MModulator. odulator. A device that lets a A device that lets a

personal computers personal computers communicate with other communicate with other computers over telephone computers over telephone lines.lines.

Converts electronic signals Converts electronic signals to sound wavesto sound waves

Converts sound waves to Converts sound waves to electronic signalselectronic signals

What kind of information What kind of information is Analog info?is Analog info?

Sound waves from a Sound waves from a telephone devicetelephone device Information is Information is

transmitted from a transmitted from a computer computer (…electronic (…electronic device)device)

Over telephone lines Over telephone lines (…sound device)(…sound device)

Must be converted Must be converted through a modem to through a modem to be compatible be compatible

What kind of information What kind of information is Digital Info?is Digital Info?

Electronic signals Electronic signals from an electronic from an electronic devicedevice

How Is Information Sent How Is Information Sent Over the Internet?Over the Internet?

In packets, In packets, downloading a downloading a section at a time.section at a time.

What Does The Internet What Does The Internet Screen Look Like?Screen Look Like?

Window’s Window’s EnvironmentEnvironment

Has Tool Bars, Icons, Has Tool Bars, Icons, Drop-Down windowsDrop-Down windows

Scroll Bars to Scroll Bars to navigate the screennavigate the screen

What is the Title Bar?What is the Title Bar? It shows the title of It shows the title of

the open Web Pagethe open Web Page It shows the Web It shows the Web

Browsers program Browsers program name.name.

What is the Toolbar?What is the Toolbar? It shows the icons for It shows the icons for

moving around the moving around the Web PageWeb Page

What is an Icon?What is an Icon?

A small picture of the A small picture of the menu item you are menu item you are choosingchoosing

What is the Address Bar?What is the Address Bar? URL – Uniform Resource Locator.URL – Uniform Resource Locator. It has a four part addressing scheme:It has a four part addressing scheme:

http://www.usoe.k12.ut.us/default/whatsnew.eduhttp://www.usoe.k12.ut.us/default/whatsnew.edu

Transfer ProtocolTransfer Protocol FilenameFilename PathnamePathname Domain NameDomain Name

What is a domain?What is a domain? The address of the URL of a The address of the URL of a

particular WEB siteparticular WEB site It tells where the address is It tells where the address is

located located i.e. .com; .edu; .govi.e. .com; .edu; .gov

The name that is to the right The name that is to the right of the last dot in the Internet of the last dot in the Internet addressaddress

www.yahoo.comwww.yahoo.com

Some common Some common domains….domains….

.COM -- Commercial.COM -- Commercial .EDU -- Educational.EDU -- Educational .NET -- Network.NET -- Network .GOV -- Government.GOV -- Government .ORG – Non-Profit Organizations.ORG – Non-Profit Organizations .INT -- International.INT -- International .MIL -- Military.MIL -- Military

What is the Status Bar?What is the Status Bar? It is located at the It is located at the

bottom of the screen.bottom of the screen. It generally indicates It generally indicates

the name of the Web the name of the Web Page that is loading.Page that is loading.

It gives the loading It gives the loading status status

It gives important It gives important messages, such as messages, such as “Document Done.”“Document Done.”

What is the Menu Bar?What is the Menu Bar? It provides a It provides a

convenient way for convenient way for you to execute typical you to execute typical file, edit, view and file, edit, view and help commandshelp commands

What are the Scroll Bars?What are the Scroll Bars? They can be They can be

located at the right located at the right side of the screen side of the screen or,or,

They can be They can be located at the located at the bottom of the bottom of the screenscreen

What is the Refresh What is the Refresh Button?Button?

It lets you try again It lets you try again when loading when loading information if the information if the network is not network is not working properly---working properly---temporarily out of temporarily out of order.order.

What is the Home What is the Home Button?Button?

It takes you back to It takes you back to the Web Page (…or the Web Page (…or Home Page) quickly.Home Page) quickly.

Where is the Web Page Where is the Web Page area?area?

Where the information Where the information is….is….

After the toolbars…After the toolbars… The main part of the The main part of the

screen…screen…

What is the AUP?What is the AUP?

AAcceptable cceptable UUse se AAgreementgreement An agreement that users must An agreement that users must

consent to that outlines the terms and consent to that outlines the terms and conditions of Internet useconditions of Internet use

Accepting full responsibility for your Accepting full responsibility for your actions while on the Internetactions while on the Internet

Do all of you have one????Do all of you have one???? Should have been turned in to your Should have been turned in to your

English TeacherEnglish Teacher

In order to preserve your In order to preserve your privacy on the Internet, you privacy on the Internet, you

must use a…must use a… PasswordPassword

Do not share with Do not share with othersothers

Computers are fairly Computers are fairly secure if you use your secure if you use your head!head!

How do you navigate the How do you navigate the Internet?Internet?

With a browser which With a browser which lets you view lets you view information on the information on the WWWWWW

What is a Browser?What is a Browser? Software which allows you Software which allows you

to view information on the to view information on the WWWWWW

Different browsers can have Different browsers can have radically different radically different capabilities and limitations capabilities and limitations Internet Explorer Internet Explorer

The most widely used The most widely used browserbrowser

Netscape NavigatorNetscape Navigator Formerly the most popular Formerly the most popular

browserbrowser Mozilla FirefoxMozilla Firefox

What is a Search Engine?What is a Search Engine?

A A programprogram that searches that searches documents for specified documents for specified keywordskeywords and returns a list of and returns a list of the documents where the the documents where the keywords were found. keywords were found.

A search engine works by A search engine works by sending out a sending out a spiderspider to fetch to fetch as many documents as as many documents as possible. possible.

Another program, called an Another program, called an indexer,indexer, then reads these then reads these documents and creates an documents and creates an indexindex based on the words based on the words contained in each document contained in each document

Name some common Name some common Search Engines….Search Engines….

YahooYahoo AltruistAltruist LycosLycos HotbotHotbot GoGo ExciteExcite Alta VistaAlta Vista Web CrawlerWeb Crawler GoogleGoogle InfoseekInfoseek

What is an ISP?What is an ISP?

IInternet nternet SService ervice

PProviderrovider A service company A service company

that provides a user that provides a user with an account on a with an account on a host computer to host computer to have access to the have access to the InternetInternet

Name some ISP’s…Name some ISP’s…

AOLAOL MSNMSN AT&TAT&T QuestQuest EarthlinkEarthlink ComcastComcast DirectGlobalDirectGlobal

The term we use when The term we use when exploring the Internet exploring the Internet

is…is… SurfingSurfing

Clicking on links to Clicking on links to explore various sites explore various sites for information we are for information we are looking forlooking for

Going back and forth Going back and forth until we find what we until we find what we wantwant

What is a Web Page?What is a Web Page?

A Home Page which A Home Page which outlines information outlines information about a certain about a certain subjectsubject

It contains links to It contains links to take you other places take you other places on the WWWon the WWW

HTMLHTML

HHyperText yperText MMarkup arkup LLanguageanguage The coding scheme used to format The coding scheme used to format

text for use in developing Web text for use in developing Web Pages on the WWWPages on the WWW <b><b> <p><p> <img src=<img src=HTTP://HTTP://www.sony.comwww.sony.com>> <a href=<a href=HTTP://HTTP://www.sony.comwww.sony.com

What is it called when you What is it called when you connect to the Web Page connect to the Web Page

you are looking for?you are looking for?

A HitA Hit The access of a file The access of a file

by a user on a serverby a user on a server You are able to pull You are able to pull

up information about up information about a certain subjecta certain subject

What allows you to jump What allows you to jump from one Web site to from one Web site to

another?another? LinksLinks They are usually They are usually

underlined and a underlined and a different color of textdifferent color of text Mostly Blue…. Mostly Blue….

HTTPHTTP HHyperyperttext ext TTransport ransport PProtocolrotocol

The transmission standard used to send an HTML The transmission standard used to send an HTML document across the WWWdocument across the WWW

Ensures reliable connections between many Ensures reliable connections between many different computer typesdifferent computer types

A common set of standards that ensures all A common set of standards that ensures all computers connected to the Internet will have computers connected to the Internet will have common ground on which to workcommon ground on which to work

What is Shareware?What is Shareware?

Software that you Software that you can obtain for free on can obtain for free on a trial basisa trial basis

May require some May require some payment for payment for continued usecontinued use

What is Freeware?What is Freeware?

Software that is Software that is distributed at no cost distributed at no cost to the userto the user

The author maintains The author maintains the copyrightthe copyright

Basically: Software Basically: Software that is copyrighted that is copyrighted but can be used but can be used freelyfreely

What is Public Domain?What is Public Domain?

Software that is Software that is NOTNOT copyrightedcopyrighted

It can be copied or It can be copied or used freelyused freely

Basically: Public Basically: Public PropertyProperty

What Are Firewalls?What Are Firewalls? An electronic blocking An electronic blocking

mechanism that will not allow mechanism that will not allow unauthorized intruders into a unauthorized intruders into a computer systemcomputer system

A software program that A software program that blocks potential hackers from blocks potential hackers from your individual computer or your individual computer or your computer network.  your computer network. 

Any computer that is always Any computer that is always connected to the internet connected to the internet needs a firewall packageneeds a firewall package

What type of mail is sent What type of mail is sent over the Internet?over the Internet?

EmailEmail Electronically Electronically

communicating with communicating with individuals outside of individuals outside of your immediate areayour immediate area

Your computer is the Your computer is the mediummedium

The rules of conduct and The rules of conduct and behavior on the Internet is behavior on the Internet is

called….called…. NetiquetteNetiquette

A set of rules that a A set of rules that a person using the person using the Internet abides byInternet abides by

Showing courtesy and Showing courtesy and respect on the respect on the InternetInternet

The part of the Internet that The part of the Internet that returns bounced mail is…returns bounced mail is…

The DAEMONThe DAEMON It defines the It defines the

problemproblem It reroutes the It reroutes the

message back to the message back to the sender with an sender with an explanation explanation

Unwanted Internet Unwanted Internet garbage is called…garbage is called…

Spam -- An electronic Spam -- An electronic message message The recipient's personal The recipient's personal

identity and context are identity and context are irrelevant because the irrelevant because the message is equally message is equally applicable to many other applicable to many other potential recipientspotential recipients

The recipient has not The recipient has not granted permission for it granted permission for it to be sent to be sent

The transmission and The transmission and reception of the message reception of the message appears to be of no appears to be of no benefit to the sender benefit to the sender

Chatting with someone Chatting with someone on the Internet is called…on the Internet is called…

Cyber ChatCyber Chat Carrying on a Carrying on a

conversation over the conversation over the computercomputer

BE CAREFUL!!BE CAREFUL!!

When a person is happy When a person is happy with the computer they with the computer they have, the computer is have, the computer is

called….called…. User FriendlyUser Friendly Easily understood Easily understood

commandscommands The computer The computer

illiterate person can illiterate person can still operate the still operate the systemsystem

Information is put out Information is put out in reasonably correct in reasonably correct formatformat

When speaking of the When speaking of the Internet of the future, we Internet of the future, we

refer to it as…refer to it as…

CyberspaceCyberspace Somewhere out Somewhere out

there…there…

What a Great Time of Life What a Great Time of Life We Live In!!!We Live In!!!