1. Internet
Chapter 9

2. Early Computers Morse telegraph Difference Engine
Atanasoff’s electronic computer
ENIAC

3. Internet Precursors
WANs and LANs
Modems
ARPANET
Videotex
BBS

4. Early Internet BITNET, USENET NSFNET Apple 1991
Becomes Internet
Apple
Hypercard
Graphics based navigation
1991
First commercial Internet use
Berners-Lee invents HTML & WWW
1993 Mosaic/Netscape graphical browser

5. Computer Technology Short term memory Long term memory
RAM
Long term memory
Hard drive, disks, CD-R
Central processing unit
‘brain’ of computer
Peripherals
Navigation & specialized tasks
Software
Instructions
Interface
CRT, mouse, GUI

6. Computer Technology

7. Internet Standards TCP/IP SMTP DNS IRC Key Internet protocol
Helps computers recognize Internet files
SMTP
protocol
Send and retrieve messages, encryption
DNS
Web addresses
IRC
Chat protocol, recognition of chat software

8. Internet Technologies

9. Internet Trends Modems 56kbs Broadband Streaming Can carry multimedia
Cable & DSL
WiFi
Streaming
Real-time distribution
Content ‘live’ or recorded
Quality issues remain

10. Programming Lingo DHTML XML WML CGI Plug-ins
Configures motion graphics
XML
Custom page arrangement
WML
Strips display for wireless devices
CGI
Scripts that dictate interactive information exchange
Plug-ins
Flash movies

11. Internet Security Cookies Encryption
Programs that track Internet navigation, send information back to originator
Encryption
Encoding files to provide security
Public key
Symmetrical key

12. Internet Industry 1990s e-commerce explosion Microsoft AOL
1999 dot-com bust shakes out industry
Microsoft
Applications
Browser
Multimedia player
AOL
Top ISP
Chat, groups, news, media services

13. Internet Industry

14. Internet Addresses URL Top level domain name Uniform resource locator
Top level domain name
.com
.edu
.org
.gov
.mil
.net
.biz

15. Online Entertainment Music & film Gaming E-publishing File sharing
Pay services
Gaming
Multiplayer
Gambling
E-publishing

16. Online Information Blogs Web logs
Amateur & professional commentary with interlinking news pages
Easy to build and maintain
Blog software free or low cost
New accountability for mainstream press

17. Online Information
Portals
Search Engines
Communities

18. Online Activities Nearly 300 million users worldwide
New languages becoming common
most common activity
Evolving advertising models
For-profit sector of Web still minority
Content personalization
myWeb

19. Digital Divide U.S. Global disparity in access
Home computer ownership 75 percent
Most of those homes connected to Internet
Minority & low-income homes still unconnected
Global disparity in access
Phone lines scarce in developing world
Wireless solutions offer some promise

20. Issues Corporate Hegemony Government censorship Piracy MS, AOL
File sharing