internet chapter 12 information available the internet contains a huge amount of information a huge...
TRANSCRIPT
INTERNETINTERNET
CHAPTER 12CHAPTER 12
Information AvailableInformation Available
The INTERNET containsThe INTERNET contains
a huge amount of a huge amount of
informationinformation
information on any information on any
topic you can think oftopic you can think of
information in the form information in the form
of web pagesof web pagesWeb Page
Foundation
5 INTERNET SERVICES5 INTERNET SERVICES
WORLD WIDE WEB WORLD WIDE WEB (WWW)(WWW): A collection of : A collection of information held in information held in multimedia form on web multimedia form on web pagespages
ELECTRONIC ELECTRONIC MAILMAIL: Sending / : Sending /
receiving receiving messagesmessages
FILE TRANSFERFILE TRANSFER: : Downloading / uploading Downloading / uploading files between computer & files between computer & serverserver
NEWSGROUPS: Subscribe to send & receive
messages from people in the same interest group
INTERNET RELAY CHAT: Having a ‘conversation’ by instantly sending & receiving messages online Foundation
BROWSERSBROWSERS
Examples of browsers are:Examples of browsers are:
A browser is a program that allows the A browser is a program that allows the user to browse or surf through the World user to browse or surf through the World Wide WebWide Web
INTERNET INTERNET EXPLOREREXPLORER
Firefox
Foundation
MODEMMODEM
A modem is neededA modem is needed
when using a when using a telephone line to telephone line to connect to an internet connect to an internet service provider’s service provider’s (ISP’s) computer(ISP’s) computer
at each end of the linkat each end of the link Modem 1
Modem 2
Telephone Link
Foundation
Internet Ready Internet Ready ComputerComputer
An internet ready computer consists of:An internet ready computer consists of:
Suitable COMMUNICATIONS Suitable COMMUNICATIONS SOFTWARE SOFTWARE
e.g. a browser & an email client e.g. a browser & an email client programprogram
MODEMMODEM
external or external or internalinternal
COMPUTER COMPUTER SYSTEMSYSTEM
Foundation
WORLD WIDE WEBWORLD WIDE WEB A collection of information held on the A collection of information held on the
internet on web pagesinternet on web pages Information is held in multimedia form Information is held in multimedia form
e.g. text, graphics, sound, animation, moviee.g. text, graphics, sound, animation, movie
Web PageWeb Page Single document of informationSingle document of information
Stored at locations (web sites)Stored at locations (web sites)
Accessed using a browserAccessed using a browser
Web Page General
HYPERLINKHYPERLINKClick on a link to activate itClick on a link to activate itLinks between:Links between: WWW pagesWWW pages DocumentsDocuments FilesFiles
HTMLHTML Hyper Text Mark-up LanguageHyper Text Mark-up Language Computer language used to Computer language used to
create web pagescreate web pages Web authoring software makes Web authoring software makes
it easy to create web pagesit easy to create web pages
www.google.co.ukHYPERLINK EXAMPLE
General
<HTML> <HEAD> <TITLE>FEE'S wEBSITE:Welcome</TITLE> </HEAD>
<BODY> <P ALIGN = CENTER> Welcome to My Website! </P>
<P ALIGN = CENTER><IMG SRC="images/my-picture-
1.jpg"> </P>
</BODY></HTML>
SEARCH SEARCH ENGINESENGINES Designed to help find informationDesigned to help find information Enter keyword (s) to find related information Enter keyword (s) to find related information Examples are Google or AskExamples are Google or Ask
COMPLEX search (C):: Searches using >1 criteria Restricts search to certain
parts of the web or selecting options from a menu
Can use AND, OR, NOT
SIMPLE search (G):SIMPLE search (G): One keyword entered One keyword entered
into an entry boxinto an entry box A button or ENTER is A button or ENTER is
pressed to activate the pressed to activate the searchsearch
Related sites are foundRelated sites are found
General
There are 2 types of There are 2 types of search:search:
INTERNET INTERNET CONNECTION CONNECTION
DIAL-UP Dial up connection
using phone line Pay-as-you-go so
adds to phone bill Slow performance
speed
Broadband Computer always
connected to ISP Fast data
transfer speeds Can use phone &
internet together
General
ONLINEONLINE
When computer is When computer is
connected to connected to
internetinternet
When a dial-up When a dial-up
connection is active connection is active
OFFLINEOFFLINE When computer is not When computer is not
connected to internetconnected to internet When a dial-up When a dial-up
connection is not activeconnection is not activeOnline
Offline
General
INTERNET INTERNET CONNECTIONCONNECTION
INTERNET SERVICE INTERNET SERVICE PROVIDERPROVIDER
An ISP An ISP company provides company provides
internet services: WWW, internet services: WWW, e-mail, file transfer, chat, e-mail, file transfer, chat, newsgroupsnewsgroups
can provide web storage, can provide web storage, chat facilities & web mail.chat facilities & web mail.
Examples of ISP’s are Examples of ISP’s are AOL, BT, TiscaliAOL, BT, Tiscali
Credit
DOWNLOADING DOWNLOADING SOFTWARESOFTWARE33 types of software available for download types of software available for download
FreewareFreeware SoftwareSoftware Totally free and can be used on any number Totally free and can be used on any number of computer systemsof computer systems
Shareware SoftwareShareware Software Trial period then has to be paid Trial period then has to be paid forfore.g. after 30 dayse.g. after 30 days
Commercial SoftwareCommercial Software It must be paid for to be usedIt must be paid for to be used
MOBILE INTERNET TECHNOLOGIES
The use of portable hardware to The use of portable hardware to connect to the internetconnect to the internet
Are mobile internet technology Are mobile internet technology examples examples
Mobile Phone
Palmtop
Laptop
VIDEO VIDEO CONFERENCINGCONFERENCING
Using internet links to conduct Using internet links to conduct meetingsmeetings
Meetings can take place between Meetings can take place between people who are large distances apartpeople who are large distances apart
Hardware required is Hardware required is – webcam & screenwebcam & screen– microphone & speakersmicrophone & speakers
Saves fuel, travel time but do not meet Saves fuel, travel time but do not meet people face to facepeople face to face
That’s all That’s all folks!folks!
Thanks for staying awake.Thanks for staying awake.