The Internet

Week 2

Cyberspace- Definitions

People using the new technology to communicate with one another

Person to person communication - that is many-to-many

The use of computer technology

Everyday Uses in Cyberspace

1980’s Word Processing,

Document preparation Telecommuting,

Teleworking Children’s games,

Recreation

Everyday Uses of Cyberspace

1990’s until Today Children’s school work, Education Adult Remote Education at home Family/Friends Communications,

Correspondence Reading News events, casual reading Family Travel, Recreation Family Records Home Banking, Financial

Management Facebook, etc.

Everyday Uses of Cyberspace

In-store and other purchases ATM, Debit card

Home Shopping TV, on-line services,

Smartphones Food Preparation

multimedia, TV, On-line services

Everyday Uses of Cyberspace

Future (almost here) Household Automated Tasks

Smart homeSmart appliancesHome roboticsHome information systems

The Internet

Worldwide connection 54,000,000,000

webpages 1.9B users

TCP/IP

Internet History

1960’s - ARPA packet switching

1970’s - Universities LAN Email UNIX Newsgroups

Internet History

1980’s - MILnet, NSFnet DNS No longer only research

oriented (business) TCP/IP

reliable, efficient, robust

Internet History

1990’s until Today WWW born Commercialization Advertisements Ordinary people publish Smartphones

Reason for Success?

No central authority Inexpensive Capabilities are popular Easy to use

Impacts of WWW

Opening of access to information

Reduction of delay for information

Evolution of hypertext

Metcalfe’s Law

The value of a network is proportional to the square of the number of its users

Original Uses

Remote Login File Transfer Research

The Basic Uses of the Net

E-mail Discussion groups File transfer Long distance computing Research Data/Image Transfer General Communications

E-Mail - Uses

Send messages Work Personal MIME capabilities

E-Mail - Advantages

No busy signal Always an answer Reader can view at any

time Cost effective Fast Reliable

E-Mail - Advantages

Facilitates teleworking Promotes communication

that would normally not take place due to costs

E-Mail - Disadvantages

Have to be networked to use it

Not 100% reliable Who else is reading the

mail?

Discussion Groups - Uses

Share ideas Education Spread beliefs to others MOO - chat room with an

atmosphere

Discussion Groups - Disadvantages

Anonymity - Who is really there with you?

Subject matter digresses Truth of information

unconfirmed

Other Uses

Banking Shopping Telemedicine Education General source of

“information” Personal Connections

Advantages

No need to get in a car Saves $ Exposure to things not

available before Reach more people

Disadvantages

Privacy Secure transfers of information Hackers Can’t use everywhere Children and censorship Illegal activity - piracy,

gambling