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If you typed NBCNews.com to get here, congratulations, you just surfed the World Wide Web. Sir Tim Berners-Lee proposed the idea on March 12, 1989, making it  25 years old .

The  Web , or  World Wide Web  (W3), is basically a system of Internet servers that support specially formatted documents. The documents are formatted in a markup language called HTML (HyperText Markup Language) that supports links to other documents, as well as graphics, audio, and video files.

The  Internet  is a massive network of networks, a networking infrastructure. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the  Internet .