計算機因特網的介紹
互聯網是由一些使用公用語言互相通信的計算機連接而成的網絡，即廣域網、局域網及單機按照一定的通訊協議組成的國際計算機網絡。接下來小編爲大家整理了計算機因特網的介紹，希望對你有幫助哦!
INTERNET
The Internet is a worldwide network of networks which interconnects computers ranging from the simplest personal computers to the most sophisticated mainframes and supercomputers. This network of networks is used for an extraordinary range of purposes - long distance collaborations, retrieving free software and documents, accessing library catalogs, logging in to supercomputers - the list of current Internet activities and services is large and the range of possible future applications is as unlimited as our imagination.
The Internet is huge. No one is exactly sure just how huge, but there are over two million connected computers. Because it is in direct communication with satellites far above us, it could even be said that the Internet is already bigger than the Earth. And because the Internet is incredibly complex, there probably isn't a single person who understands everything about it. Remember this if you get confused and you'll probably feel better!
WHAT IS AN "INTERNET"
An internet (note the lower case "i") is a computer network which allows computers with distinctive software and hardware to communicate, or "internetwork". Many kinds of computers can be connected to an internet, and each computer can serve a specialized role, allowing an internet to offer a wide variety of services to its users. For example, you could use one internet computer designed to perform complex calculations and then send the output to another internet computer designed to display colorful graphs.
WHAT IS "THE INTERNET"
The Internet is specific kind of internet. In The Internet Passport, the Internet will be defined as the network of networks which follow a set of rules known as the "Internet Protocol (IP) suite".
But what does this mean to you? It means that any computer which is connected to the Internet can communicate with any other Internet computer thanks to the rules of IP, and that a message sent from one Internet computer to another will get to the intended destination. From the user's perspective, this works much the way the telephone system works. You can dial from your phone to any other phone on the system no matter what kind of telephone you have; you only need to know the phone number of the person you want to reach.
WHAT IS THE INTERNET USED FOR
The Internet contains the electronic equivalents of conference rooms and cafes, libraries and bookstores, post offices and telephones, radio and television stations, newspaper and magazines, and a growing variety of services that have no counterparts in "the real world".
Accessing Computer Resources
No matter how humble your own computer might be, if it is connected to the Internet you can access the resources of thousands of computers throughout the world. With an Internet connection you can：
access online library catalogs, w copy computer files or software from archives,
access databases for teaching or research, w obtain free electronic books,
use educational and information services,
use directory services to find Internet users, and
access supercomputer sites.
Although the Internet is made up of many diverse computers, together they work like one world-wide computer system.
Communicating with Other People
People communicating with people is the essence of the Internet. Using the Internet you can：
exchange electronic mail,
find people throughout the world who share your interests, and
engage in discussions and collaborations with other Internet users.
These services have created a truly global village where people communicate with each other not because they happen to live in thesame place, but because they share the same interests. This simple fact has profound consequences for everyone no matter where they live.
因特網
因特網是一個世界規模的由多個網絡連接而成的網絡，它所連接的計算機小到最簡單的個人電腦，大到最複雜的計算機和超級計算機。該網絡的應用範圍也特別廣—— 遠距離合作、檢索免費軟件和文檔、查閱圖書館目錄、登錄到超級計算機上——目前因特網的功能和業務範圍十分廣泛，而今後的應用前景正如我們想象的那樣是無止境的。
因特網非常巨大。無人能夠準確地說出它有多大，聯網計算機已超過兩百萬臺。因爲它直接通過遠離我們的衛星通信，因而甚至可以說因特網已經比地球還大了。又因爲因特網不可思議的複雜，因而很可能沒有一個人能對因特網無所不曉。請記住，如果你糊塗了，那你可能會感覺更好。
什麼是互聯網
互聯網(注意小寫字母i)是一種計算機網絡，該網絡上的計算機在通信時可以使用不同的軟件和硬件。多種計算機都可以連入互聯網，每臺計算機都可以有一獨特作用，於是一個互聯網就可以向它的用戶提供各式各樣的業務。例如，可以用互聯網上的一臺計算機去完成複雜的計算任務，然後將結果送到另一臺計算機以顯示彩色圖形。
什麼是因特網
因特網是一種專用互聯網。因特網在它的證書中定義爲網絡的網絡，該網絡使用了一組叫做互聯網協議簇的協議(IP)。
但對你來說，這意味着什麼呢?這表明，由於IP協議的作用，連接到因特網上的計算機可以與因特網上任何其他計算機通信，並且從一臺因特網上的計算機送往另一臺計算機上的信息，將到達指定的目的地。從用戶的角度來看，其工作方式很像電話系統的工作方式。在電話系統內，可以從你的電話機撥打任何其他電話，而不管你使用什麼樣的電話機;你只需知道對方的電話號碼即可。
因特網的用途
因特網包含了會議室和咖啡屋、圖書館和書店、郵政局和電話局、無線電臺和電視臺、報社和雜誌社的電子業務，以及“現實世界”中還沒有出現的各種業務。
訪問計算機資源
不論你的計算機檔次如何低，只要你連入因特網，你就可以訪問遍及全世界的成千上萬臺計算機上的資源。使用因特網，可以：
訪問在線圖書館目錄
從計算機檔案庫存儲器中拷貝文件或軟件
訪問教學或科研數據庫
獲取免費電子圖書
使用教育和信息服務
使用目錄服務以查找因特網用戶
訪問超級計算機站點
雖然因特網是由許多各式各樣的計算機組成的，但它們就像是一個遍佈全世界的計算機系統一樣一起工作着。
與其他人通信
因特網的實質是人與人之間的通信。使用因特網，可以：
交換電子郵件
查找世界上與你志趣相投的人
與因特網的其他用戶進行討論與合作
這些業務已經形成了一個真正的地球村，在那裏人們相互交流不是因爲碰巧住在一起，而是因爲他們有相同的興趣。這一簡單的事實對於每一個人來講，都是意味深長的，不管他住在哪裏。
