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Internet-aj

10. února 2008 v 18:18 | Kája |  Referáty
Tereza Bílková C3B,
Karolína Hozmanová C3C
Internet
Internet is the worldwide computer´s net which conected smaller nets that transmit data by packet switching using the standard Internet Protocol (IP).
History:
In 1969 was created experimental net called ARPANET. In 1972 was developed the first e-mail program. Firstly the ARPANET was used for military. In 1985 ARPANET now called MILNET (like military) was offered for first commercials purposes, than in 1987 was born the name ,,Internet". In 1990 ended ARPANET. In this time was presented the first www browser.
The Internet spreads into users, in 1996 about 55 million people have already use the Internet and now it is more then 1 milliard people.
The Internet serves for transmition of informations and provides many services as electronical messages, chat, www pages, sharing files, on-line games, searching, catalogue etc.
Adventages and disadventages:
Internet is certainly very spread, and cheap source of information. We can get news, informations and entertainment. But we can´t be sure if this informations are right - nobody take control of facts. Some informations are very different.
One of disadventeges is that we never know who can sit before other computer, and what do he has ideas - good or bad.
Next problem is limitation personal comunication. People dont´t go out, don´t speak, only write. Because they don´t go out, don´t sport, they aren´t healthy.
Problem is anonymity too. Nameless people say anything different, than poeple who sign their opinion.
The last problem of internet is piracy in music or in films.
 

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