The document discusses what the Internet is, how it functions, and how to access it. Specifically, it defines the Internet as a worldwide network that allows users to share information electronically via connected computers. It then explains how individuals can connect to the Internet through options like dial-up, DSL/cable, or wireless and need a web browser to view and interact with Internet content on various websites and web pages.

1. The InternetThe Internet

2. What is the Internet?What is the Internet?
 A world-wide network of computers allowsA world-wide network of computers allows
people to share information electronicallypeople to share information electronically
 Like a BIG book with many web-pages onLike a BIG book with many web-pages on
different topicsdifferent topics
 Can be accessed anywhere with anCan be accessed anywhere with an
Internet connectionInternet connection

3. Why use the Internet?Why use the Internet?
 Apply for jobs or schoolsApply for jobs or schools
 Fill out government formsFill out government forms
 Check bank accountsCheck bank accounts
 Communicate with family,Communicate with family,
friends and co-workersfriends and co-workers
 Do researchDo research
 Learn new skillsLearn new skills
 Read newsRead news
 Watch videosWatch videos

4. © 2005 Prentice-Hall, Inc© 2005 Prentice-Hall, Inc SlideSlide 44
The Internet’s HistoryThe Internet’s History
 Significant events in the history of theSignificant events in the history of the
Internet.Internet.
1962
1969
1972
1983
1989 1994
1995
J.C.R.
Lickliter
conceives
of the idea
of a
“galactic
network”.
Ray Tomlinson
invents e-mail.
The World
Wide Web is
developed.
The first
graphical
Web
browser is
developed.
ARPANET goes
online,
connecting four
computers.
Internet
protocols
begin.
Barriers to
commercial
activity are
lifted.
Click on the dates for more information.

5. What is an Internet ServiceWhat is an Internet Service
Provider?Provider?
 A company that provides Internet accessA company that provides Internet access
for customersfor customers
(examples: Comcast, Qwest, AOL)(examples: Comcast, Qwest, AOL)
 Your computer connects to the InternetYour computer connects to the Internet
Service Provider (ISP), then to the InternetService Provider (ISP), then to the Internet
Your computer InternetISP

6. © 2005 Prentice-Hall, Inc© 2005 Prentice-Hall, Inc SlideSlide 66
The Internet and Web: What’sThe Internet and Web: What’s
the Difference?the Difference?
 The Internet is the physical connection ofThe Internet is the physical connection of
millions of networks.millions of networks.
 The Web uses the Internet for itsThe Web uses the Internet for its
existence.existence.
 The Web consists of hypertext embeddedThe Web consists of hypertext embedded
on Web pages that are hosted on Webon Web pages that are hosted on Web
sites.sites.

7. © 2005 Prentice-Hall, Inc© 2005 Prentice-Hall, Inc SlideSlide 77
The Web SiteThe Web Site
 AA Web siteWeb site is ais a
collection of related Webcollection of related Web
documents that are madedocuments that are made
available to the public.available to the public.
 TheThe index pageindex page, or, or
home pagehome page, is the first, is the first
page of a Web site.page of a Web site.
 Web pagesWeb pages areare
individual Webindividual Web
documents.documents.

8. © 2005 Prentice-Hall, Inc© 2005 Prentice-Hall, Inc SlideSlide 88
The Hypertext ConceptThe Hypertext Concept
 HypertextHypertext is a way of presenting information sois a way of presenting information so
that the order in which it’s read is left up to thethat the order in which it’s read is left up to the
reader.reader.
 HyperlinksHyperlinks are underlined or highlighted wordsare underlined or highlighted words
that can be used to view another document or Webthat can be used to view another document or Web
page.page.
 HypermediaHypermedia refers to a link to multimedia, such asrefers to a link to multimedia, such as
music and movies.music and movies.

9. © 2005 Prentice-Hall, Inc© 2005 Prentice-Hall, Inc SlideSlide 99
Web Browsers and ServersWeb Browsers and Servers
 Web browsersWeb browsers display a Web document anddisplay a Web document and
enable users to link to other Web pages.enable users to link to other Web pages.
– The first browsers were text-only.The first browsers were text-only.
– MosaicMosaic was the first graphical browser.was the first graphical browser.
 Web serversWeb servers respond to the requests ofrespond to the requests of
browsers. They find and send requestedbrowsers. They find and send requested
resources back to the browser.resources back to the browser.

10. © 2005 Prentice-Hall, Inc© 2005 Prentice-Hall, Inc SlideSlide 1010
 Web addresses are an addressing system thatWeb addresses are an addressing system that
identifies where a Web resource is located.identifies where a Web resource is located.
 TheThe uniform resource locatoruniform resource locator ((URLURL) is the) is the
standard used to identify Web resources.standard used to identify Web resources.
 The URL consists of:The URL consists of:
URL
Web Addresses (URLs)Web Addresses (URLs)
http://
Protocol
identifies
the means
of access
www.yahoo.com/
Server contains
the domain
name of the
Web server
help/ shop/
Path
identifies the
location of the
document
shop-01.html
Resource
specifies the
filename of the
resource

11. How to connect to the InternetHow to connect to the Internet
 Three main ways to connect to theThree main ways to connect to the
InternetInternet
 Dial-UpDial-Up
 High Speed/DSLHigh Speed/DSL
 Wireless Connection (Wi-Fi)Wireless Connection (Wi-Fi)

12. Dial-Up Internet ConnectionDial-Up Internet Connection
 Dial-UpDial-Up
 All you need is a computer, phone-line and Internet
Service Provider! (ISP)
 Not as fast as other Internet connections,
but often more affordable
ISP
Internet
Your computer Landline

13. High Speed (Cable/DSL) InternetHigh Speed (Cable/DSL) Internet
ConnectionConnection
 Travels through fiber-optic cablesTravels through fiber-optic cables
undergroundunderground
 Needs to be connected by a Modem toNeeds to be connected by a Modem to
your computeryour computer
– Modem: A hub that connects theModem: A hub that connects the
computer to the Internetcomputer to the Internet
 Faster than Dial-upFaster than Dial-up

14. Wireless Internet Connection
(Wi-Fi)
 Your computer must be aYour computer must be a
“Wireless enabled”“Wireless enabled”
devicedevice
 Your computer can pickYour computer can pick
up signals from differentup signals from different
wireless networkswireless networks
 Some networks requireSome networks require
passwords or apasswords or a
subscription, others aresubscription, others are
freefree
This is what theThis is what the
wireless symbolwireless symbol
would look like ifwould look like if
your computeryour computer
was connectedwas connected

15. Web BrowserWeb Browser
A web-based program that displays the InternetA web-based program that displays the Internet
Common Web BrowsersCommon Web Browsers
 Safari: for Apples/MacintoshSafari: for Apples/Macintosh
 Internet Explorer: for Windows onlyInternet Explorer: for Windows only

16. Other Web BrowsersOther Web Browsers
 Google Chrome: created by GoogleGoogle Chrome: created by Google
 Mozilla Firefox: works on Mac & PCMozilla Firefox: works on Mac & PC