History of the Internet
The internet can be thought of as beginning with the first electrical telegraphic communication.
First electrical telegraph
One very early telegraph was an electrochemical one created by the German physician, anatomist and inventor Thomas von Sömmering.
The U.S. east and west coasts were connected by Morse's telegraph, bringing to an end the Pony Express.
Transatlantic telegraph cable
The first commercially successful transatlantic telegraph cable was successfully completed on 18 July 1866.
Invention of telephone
Alexander Graham Bell was the first to be awarded a patent for the electric telephone in March 1876.
"Telex" - TELegraph EXchange
Telex began in Germany as a research and development program in 1926 that became an operational teleprinter service in 1933.
Call for a Global Network
"A network of such [computers], connected to one another by wide-band communication lines..."
Message block switching
The concept of message block switching developed by Baran and first presented to the Air Force in the summer of 1961.
The first router
The very first device that had fundamentally the same functionality as a router does today, was the Interface Message Processor (IMP).
IPv4 is a connectionless protocol for use on packet-switched Link Layer networks (e.g., Ethernet).
In March 1982, the US Department of Defense declared TCP/IP as the standard for all military computer networking.
Tim Berners-Lee specified HTML (the HyperText Markup Language) and wrote the browser and server software in the last part of 1990.
CSS separates style from HTML markup. By the end of 1996, CSS was ready to become official, and the CSS level 1 Recommendation was published in December.
Due to IPv4 being limited to 4 billion addresses the first region exhausted its addresses on April 15, 2011. IPv6 has .727 X 1029 (792 septillion) times as many addresses as IPv4.