DARPA-DARPANET- NSF- NSFNET-.pptVIP

Development n. 发展，进展 The development of industry and agriculture needs careful planning. 工农业的发展需要周密的计划 Tell me the latest development in the strike 请把罢工的必威体育精装版进展告诉我 With the development of····随着···的发展 developing country 发展中国家 developed country 发达国家 * * DARPA: DARPANET: NSF: NSFNET: Defense Advanced Research Projects Agency国防部高级研究计划署 The network of computers created by a US defense organization, DARPA. It’s short for (US) National Science foundation.国家科学基金会 A network started by the NSF, known as the Inter-Network, or “Internet”. Vocabulary Expression The internet is the biggest source of information in the world, and it’s accessible through a computer. It consists of millions of pages of data. In 1969, DARPA, a US defence organization, developed a way for all their computers to “talk” to each other through the telephone. They created a network of computers called DARPARNET. For fifteen years, only the US army could use this system of communication. Then in 1984,the US National Science Foundation (NSF) started the NSFNET network. It then became possible for universities to use the system as well. NSFNET became know as the Inter-Network, or “Internet”. The World Wide Web (the web) is a computer network that allows computer users to access information from millions of websites via the Internet. At the moment, about 80 percent of web traffic is in English, but this percentage is going down. By 2020, much web traffic could be in Chinese.（委婉的推测） The World Wide Web was invited in 1991 by an English scientist, Tim Berners-Lee. Berners-Lee built his first computer while he was at university using an old television! He came up with the idea of the World Wide Web in1989 while he was working in Switzerland. Berners-Lee made it possible for everyone to use the Internet, not just universities and the army. He designed the first “web browser”, which allowed computer users to access documents from other computers. From that mo