Transcript Brief History of Internet

Brief History of Internet
Internet Impact





Check weather
Buy goods
Play music
Find the shortest route
Give a lecture…
The Incredible Growth
80000000
70000000
60000000
50000000
40000000
30000000
20000000
10000000
0
Approximate Number of Computers on the Internet
Brief Internet History

Batch Environment - 1950s


No direct interaction between users and their
programs during execution
Time Sharing - 1960s


Users were able to interact with the computer and
could share its information processing resources
Marked the beginning of computer
communications
Brief Internet History (cont.)
Time Sharing:
Dumb terminals connected to
a central computer system
Brief Internet History (cont.)

Late 1960s: ARPANET


ARPA (Advanced Research Projects Agency)
commissioned an experimental computer network
1970s:

Distributed Processing: minicomputers;


Communication between neighbor processors and
applications via networks
Growth of ARPANET and Invention of Email
Brief Internet History (cont.)

1980s:



WAN and LAN
Prototype Internet
TCP/IP:Allows different networks to
interconnect
A LAN Example
E
D
A
C
B
Internet: a network of
networks
The Internet
Brief Internet History (cont.)

1990s: WWW



HTTP and HTML
Marc Andreessen: Mosaic (all-in-one
solution)
Commercial traffic allowed ECommerce
Networking Questions








Over what medium?
At what speed?
How to address computers?
Which path?
How to handle (detect & recover) errors?
What services?
How to address documents?
What data format?