When was the Internet discovered?

The hypothesis of the Internet was first written about by J.C.R. Licklider, but the actual building of it did not occur until 1969 with the creation of ARPANET. The first two nodes to be connected were at UCLA's Network Measurement Center and the Stanford Research Institute.

Leonard Kleinrock from MIT theorized the concept of packet switching that would enable computers to communicate effectively via a network. The ARPANET was first demonstrated at the International Computer Communication Conference in 1972, which is also the first year electronic mail was introduced. The idea of the Internet is based on the concept of many independent networks joined together, including packet-based radio networks and satellite networks.