1. Timeline History
of Internet
1957
Russians launch
Sputnik.
Eisenhower saw the need
for the Advanced Research
Projects Agency (ARPA).
ARPA becomes a
“technological think-tank
for american defence”.
Several years later, ARPA
starts looking into
computer communication
and networking.

2. 1961
Leonard Kleinrock uses
queuing theory, proposes
packet switched networks.
1962
ARPA appoints J. Licklider
and L. Roberts to head its
computer research program.
Focus on computer
communication for
military purposes

3. 1967
Lawrence Roberts of ARPA
publishes plan for the
first computer network
system – the ARPANET.
Packet switches were needed.
Called Interface Message
Processors (IMP), the contract
was awarded to BBN.
1969
IMPs installed in UCLA,
Stanford, UCSB and Utah.

4. 1972
ARPANET, with 40
nodes, goes public in
1972.
NCP, first host-to-host
protocol, enables
network applications.
Ray Tomlinson writes
email program for
ARPANET.
Telnet protocol RFC
published.