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What is the Internet?

A Computing at School (CAS) talk by
      Dr Leslie Carr for the
CAS Wessex Conference 22/3/2013
Cables
and routers and switches
connecting zillions of computers
and people using computers
at home on the street
and overseas
in an international super-network
a network of networks
of conversations
sending pictures
and all talking at once!

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What is the Internet?