1968 - DARPA (Defense Advanced Research Projects
Agency) contracts with BBN (Bolt, Beranek & Newman)
to create ARPAnet.
1970 - First five nodes:
UCLA
Stanford
UC Santa Barbara
U of Utah, and
BBN
1974 - TCP specification by Vinton Cerf
1984 - On January 1, the Internet with its 1000 hosts;
using TCP/IP for its messaging.