The internet doesn't have a single inventor; it was the result of decades of collaborative research by computer scientists, engineers, and government agencies. However, two people are generally recognized as the "fathers of the internet": Vinton Cerf and Bob Kahn.
In the 1970s, Cerf and Kahn invented TCP/IP (Transmission Control Protocol and Internet Protocol). This was the breakthrough set of rules that allowed different, separate computer networks to "speak" the same language and connect with one another, forming the global "network of networks" we know today.
Here is how it actually came together:
The Concept and ARPANET
1960s
The U.S. Department of Defense's research arm (ARPA) funded a project to create a robust, fault-tolerant computer network. Scientist J.C.R. Licklider proposed the idea of a "Galactic Network" of interconnected computers.
The First Message
1969
The first working prototype, ARPANET, came online. The first message was sent from a computer at UCLA to one at Stanford. They tried to type "LOGIN," but the system crashed after the first two letters, making "LO" the first internet message.
The Internet is Born
Jan 1, 1983
ARPANET officially switched its core networking protocols to Cerf and Kahn's TCP/IP. This date is widely considered the official birthday of the modern internet.
The World Wide Web
1989
Computer scientist Tim Berners-Lee invented the World Wide Web. While people often confuse the two, the internet is the physical network of connected computers, and the web is the system of linked documents and web pages (like the one you're looking at right now) that runs on top of the internet.
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