Summary
Highlights
The video introduces web technology as a crucial subject for software development, focusing on basic concepts and programming languages. It emphasizes the inseparable link between web technologies and the internet, leading into a discussion of the internet's history, services, and search engines.
The internet is defined as a global network of billions of computers and devices, enabling information access and worldwide communication. Its concept began in the late 1960s with ARPANET, created by the US Department of Defense and ARPA to advance technology, connecting scientists and engineers across the country.
ARPANET initially linked Pentagon-funded research institutions over telephone lines, connecting to four universities: UCLA, UC Santa Barbara, Stanford, and the University of Utah. It was primarily used by research organizations and universities to share and exchange information within their networks.
Between 1969 and the early 1970s, ARPANET expanded with many new computers. By the mid-70s, other networks emerged globally. Email was invented in 1971 by Ray Tomlinson, revolutionizing communication. The '@' symbol was adopted to denote sending messages between computers. Despite early problems, engineers quickly devised solutions.
In 1989, the U.S. government lifted restrictions, allowing the internet for commercial use worldwide. During the 1980s, computers became more affordable, making them accessible to common users. Since then, the internet has grown exponentially, connecting over 30,000 networks, 10 million computers, and 50 million users in over 150 countries, continuing its rapid expansion.