Electronic Electronic CommunicationsCommunications

CPS120CPS120

Introduction to Computer ScienceIntroduction to Computer Science

Lecture 3Lecture 3

E-MailE-Mail

• E-mail is a fast, economical and E-mail is a fast, economical and convenient way to send messages convenient way to send messages to family, friends and colleaguesto family, friends and colleagues

• AddressesAddresses– Location of an individual mailbox on Location of an individual mailbox on

the Internetthe Internet– User name, @ sign, domain – no User name, @ sign, domain – no

spacesspaces

Web-based E-mailWeb-based E-mail

• Don’t need email clientDon’t need email client• Popular Web-based E-mail ServicesPopular Web-based E-mail Services

– www.hotmail.comwww.hotmail.com– www.email.comwww.email.com– mail.yahoo.commail.yahoo.com

OrganizationOrganization

• By type:By type:• .com.com• .edu.edu• .gov.gov• .mil.mil• .net.net• .org.org

• By countryBy country• Australia - .auAustralia - .au• Canada - .caCanada - .ca• Ireland - .ieIreland - .ie• Italy - .itItaly - .it• Japan - .jpJapan - .jp• United Kingdom United Kingdom

- .uk- .uk

Other new codes have been defined

E-mail FeaturesE-mail Features

• Address booksAddress books• SignaturesSignatures• Attachment of filesAttachment of files

– Try to keep under 50KbTry to keep under 50Kb– Sometimes certain types of files are Sometimes certain types of files are

screenedscreened

E-Mail IssuesE-Mail Issues

• EmoticonsEmoticons• :-):-)• AbbreviationsAbbreviations

– LOL LOL – TTFNTTFN

• NetiquetteNetiquette– ShoutingShouting– FlameFlame

VirusesViruses

• An e-mail virus is a program that can An e-mail virus is a program that can disrupt the normal operation of a disrupt the normal operation of a computercomputer– Display of unusual messagesDisplay of unusual messages– Destroying files on the hard driveDestroying files on the hard drive– Sending mail to people in your address bookSending mail to people in your address book

• Opening files; sometimes only in Opening files; sometimes only in previewpreview

• Virus programs available commerciallyVirus programs available commercially– Must be kept up-to-dateMust be kept up-to-date

Newsgroups and ChatNewsgroups and Chat

Chapter 12Chapter 12

Mail GroupsMail Groups

• A mailing list is a discussion group that A mailing list is a discussion group that uses e-mail to communicateuses e-mail to communicate– A list of mailing lists is at A list of mailing lists is at www.liszt.comwww.liszt.com

• Moderated vs. un-moderated listsModerated vs. un-moderated lists• Must subscribe to participateMust subscribe to participate• Two addressesTwo addresses

– Mailing list addressesMailing list addresses– Administrative addressesAdministrative addresses

NewsgroupsNewsgroups

• A discussion group that allows people A discussion group that allows people with common interests to communicate with common interests to communicate with each otherwith each other

• USENET (User’s Network)USENET (User’s Network)– All the computes that distribute newsgroup All the computes that distribute newsgroup

informationinformation

• MessagesMessages– Individual postsIndividual posts

• ThreadsThreads– Messages and all repliesMessages and all replies

AddressingAddressing

• First word describes the main topicFirst word describes the main topic• Each additional word is separated Each additional word is separated

by a dot and serves to narrow the by a dot and serves to narrow the topictopic

Networking AspectsNetworking Aspects

• Newsreader – program that lets you Newsreader – program that lets you read and post onlineread and post online– Microsoft Outlook has a built-in readerMicrosoft Outlook has a built-in reader– GravityGravity– Free AgentFree Agent

• News serverNews server– A computer that stores newsgroup A computer that stores newsgroup

messagesmessages

Newsgroup CategoriesNewsgroup Categories

altaltbizbizcomcom

ppmiscmiscrecrecscisciSocSoc

talktalk

• General InterestGeneral Interest• BusinessBusiness• ComputersComputers• MiscellaneousMiscellaneous• Recreation & Recreation &

HobbiesHobbies• ScienceScience• Social Social

(culture/politics)(culture/politics)• DebateDebate

• alt.fans.actors

• biz.entrepreneurs

• comp.security.misc

• misc.books.technical

• rec.food.recipes

• sci.physics

• soc.history

• talk.politics.misc

Newsgroup EtiquetteNewsgroup Etiquette

• Lurk firstLurk first• Read FAQRead FAQ• ReplyReply• Send a private replySend a private reply

ChattingChatting

• One of the most popular features on the One of the most popular features on the Internet (but no one admits to doing it)Internet (but no one admits to doing it)

• Text-basedText-based• Multi-mediaMulti-media

– Internet Relay Chat (IRC) channelsInternet Relay Chat (IRC) channels• Need a program to participate (www.mirc.com)Need a program to participate (www.mirc.com)

• Instant messaging allows you to Instant messaging allows you to communicate privately with otherscommunicate privately with others– MSN or AOLMSN or AOL