4:
4:
(Internet);
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internet: -> International Network ( )
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...!!!
1969 ARPANET
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,
Arpanet
1974
1990 internet, ,
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(E-mail)
(Chat)
(Teleconference)
(Newsgroups)
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Chat/
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forum .
File Transfer Protocol FTP
. :
(MP3 ,Wav, Midi)
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