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a connected society is a more informed society

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Timeline and relevance of communication invention that lead to internet invention

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Timeline and relevance of communication invention that lead to internet invention

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1876
-- Telephone. Alexander Graham Bell Exhibits.
Why is this relevant?

Telephones exchanges provide the backbone of Internet connections today.
Modems provide Digital to Audio conversions to allow computers to connect over the telephone network.

1957
-- USSR launches Sputnik, first artificial earth satellite. Why is this relevant?
The start of global telecommunications. Satellites play an important role in transmitting all sorts of data today.
In response, US forms the Advanced Research Projects Agency (ARPA) within the Department of Defense (DoD) to establish US lead in science and technology applicable to the military.
1962 - 1968
-- Packet-switching (PS) networks developed Why is this relevant?
The Internet relies on packets to transfer data.
The origin is military : for utmost security in transferring information of networks (no single outage point).
Data is split into tiny packets that may take different routes to a destination.
Hard to eavesdrop on messages.
More than one route available -- if one route goes down another may be followed.
Networks can withstand large scale destruction (Nuclear attack - This was the time of the Cold War).

1969
-- Birth of Internet
ARPANET commissioned by DoD for research into networking
Why is this relevant?
First node at UCLA (Los Angeles) closely followed by nodes at Stanford Research Institute, UCSB (Santa Barbara) and U of Utah (4 Nodes).

1971
-- People communicate over a network
15 nodes (23 hosts) on ARPANET.
E-mail invented -- a program to send messages across a distributed network. Why is this relevant?
E-mail is still the main way of inter-person communication on the Internet today.
We will study how to use and send E-mail shortly in this course.
You will make extensive use of E-mail for the rest of your life.

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Timeline of Internet History Main Events

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Much like the industrial revolution, the Internet revolution has changed the way people live, shop, socialize and work, and the way companies operate