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  DNS(Domain Name Server) introduced to the Internet,with then consisted of about 1000 hosts.  World Wide Web,invented by Tim Berners-Lee who saw the need for a global information exhcange that would allow physicists to collaborate on research.The Web started as a text-only interface,but NCSA Mosaic later presented a graphical interface for it. 
 |  美国国防部建立了阿帕网,作研究用。这就是因特网的前身。阿帕网到七十 年代开放给非军事界。 
 
 
 
 
 
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