The Internet is a giant network of computers located all over the world that communicate with each other. The Internet is an international collection of computer networks` that all understand a standard system of addresses and commands, connected together through backbone systems. It was started in 1969, when the U.S. Department of Defence established a nationwide network to connect a handful of universities and contractors. The original idea was to increase computing capacity that could be shared by users in many locations and to find out what it would take for computer networks to survive a nuclear war or other disaster by providing multiple path between users. People on the ARPNET (as this nationwide network was originally called) quickly discovered that they could exchange messages and conduct electronic "conferences" with distant colleagues for purposes that had nothing to do with the military industrial complex. If somebody else had something interesting stored on their computer, it was a simple matter to obtain a copy (assuming the owner did not protect it). Over the years, additional networks joined which added access to more and more computers. The first international connections, to Norway and England, were added in 1973. Today thousands of networks and millions of computers are connected to the Internet. It is growing so quickly that nobody can say exactly how many users "On the Net". The Internet is the largest repository of information which can provide very very large network [參考譯文] Internet是由位于世界各地相互通信的計算機連接而成的巨大的計算機網(wǎng)絡。 Internet是計算機網(wǎng)絡的國際性的集合,這些網(wǎng)絡都符合具有地址和命令的標準體系,并經(jīng)骨干網(wǎng)連在一起。Internet始建于1969年,當時美國國防部為連接少數(shù)幾所大學和協(xié)議企業(yè)而建立了一個全國性網(wǎng)絡。最初的想法是要增加計算機能力并可由許多地點的用戶共享,并且通過提供用戶間多條路徑來找到哪一種計算機網(wǎng)絡能夠在核戰(zhàn)或其他災難中幸存。ARPNET(這種全國網(wǎng)絡最初的名稱)上的用戶很快就發(fā)現(xiàn)他們可以與遠距離的同事交換消息,并且進行某種目的的電子“會議”,而這些目的與軍事工業(yè)企業(yè)沒有任何關(guān)系。如果另外一些人在其計算機中存有有趣的東西,得到其拷貝是很容易的事(假定擁有者沒有進行保護)。 幾年間,新的網(wǎng)絡接入使越來越多的計算機加入進來。在1973年進行了第一次與挪威和英國的國際連接。今天,有成千上萬的計算機網(wǎng)絡和數(shù)百萬臺計算機與Internet相連。Internet發(fā)展如此之快以至于沒有人能準確地說出網(wǎng)上有多少用戶。 Internet是最大的信息寶庫,它可以提供非常巨大的網(wǎng)絡資源。這種網(wǎng)絡資源可分為網(wǎng)絡設備資源和網(wǎng)絡信息資源。網(wǎng)絡設備資源使我們能夠進行遠程計算和通信。網(wǎng)絡信息資源向我們提供各種各樣的信息服務,如科學、教育、商務、歷史、法律、藝術(shù)和娛樂等等。 |