Summary
Highlights
The internet began over 50 years ago, initially used by scientists and researchers for communication during the Cold War. In 1962, JCR Licklider proposed a network of interconnected computers. The first message was sent in 1969 via ARPANET, a government computer network, between UCLA and Stanford, though it only partially transmitted.
By 1971, the University of Hawaii's ALOHAnet was added, followed by networks in London and Norway. Also in 1971, Ray Tomlinson developed the first system for sending electronic mail (email) between ARPANET users, using the '@' symbol to separate the user's name from the host name.
Vinton Cerf and Robert Kahn invented Transmission Control Protocol (TCP) and Internet Protocol (IP) to enable communication between different computer networks globally. In 1991, Tim Berners-Lee invented the World Wide Web, transforming the internet from a scientific data-sharing space into an accessible network of information for everyone.
Early internet browsers like Erwise (1992) introduced graphical interfaces. Mosaic (1993) popularized web surfing, influencing later browsers like Netscape Navigator (1994), which accounted for 90% of web usage by 1995. Companies like AOL and CompuServe began offering dial-up internet access in the early 90s, where users connected via telephone lines, meaning the phone and internet could not be used simultaneously.
The internet is crucial for modern life, enabling access to information, global communication, sharing ideas, and education. It has facilitated platforms like Facebook, Twitter, and YouTube, and even allowed for the first online purchase: a pizza.