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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 home
Smart appliances
Home robotics
Home 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