The History of the Internet

　　Many people are surprised when they find that the Internet was回答

in the 1960s. At that time, computers were large and expensive. Computer network didn.t work well. If one computer in the network回答

, then the whole network stopped. So a new network system had to be set up. It should be good enough to be used by many different computers. If part of the network was not working, information could be sent through回答

part. In this way computer network system would keep on working on the time.
　　At first the Internet was only used by the government, but in the early回答

, universities，hospitals and banks were allowed to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became回答

and easier to use. Scientists had also developed software that made “surfing” in the Internet more convenient.