How the Internet came to be.

ARPANET Photo from

The Internet was a common idea in the past. The idea of which the world could connect with each other over a system. There is not one person to give credit for the concept of Internet, rather a whole team of engineers and scientist. Leonard Kleinrock published the first paper on packet switching at MIT in 1961. The theory of packet switching however was written up by multiple engineers and groups at the same time. None of them knew that other researchers had come up with concept as well. Packet switching is the transfer of data across different networks. For example, a file is split into small packets, each with a header that will cover a start of IP address, the destination IP address, and number of packets for the file. After data transfer was no longer just a theory there had to be a way for the computers to connect. In 1965 Thomas Merrill and Roberts connected two computers using a low-speed dial-up telephone line. One by one researchers created different nodes to connect to ARPANET (Plan towards obtaining Internet). First came the packet switching node for data transfer. Next came a node that would map the IP address of senders and host. After that development it was the first ever host to host connection through the “Internet”. The next nodes that followed were for graphics or visualization and mathematical functions. Those nodes were for the use of storage and displays. In 1970 computers were added onto ARPANET and applications were beginning to develop. By 1972 electronic mail or email was introduced. That was how internet was introduced to the world.