epikoinonies-internet 1-2

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    1.

    1

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    ;

    .

    ( ,

    )

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    i. ,

    ii. ,

    iii. () ,

    .

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    2.

    2

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    2.1

    ;

    :

    ,

    ,

    fax,

    (data)

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    2.2 ;

    .

    (binary digit)

    bit , 1 0.

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    2.3 ;

    .

    ,

    , .

    ,

    ASCII, BCD EBCDIC.

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    Google

    ascii

    code bcd binary

    EBCDIC

    Unicode

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    2.4

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    2.4.1.

    ;

    .

    ,

    .

    ,

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    2.4.1.2.

    (half duplex)

    .

    .

    ,

    ,

    .

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    2.4.1.3.

    (full duplex)

    .

    .

    , .

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    2.5

    (parallel

    transmission)

    (serial transmission)

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    2.5.1

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    2.5.2.

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    2.5.4.

    .

    bytes ,

    .

    , , byte .

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    2.6 ;

    , , .

    , ,

    bit (bits per second, bps)

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    2.6 /2.6.1. (point

    to point)

    2 ,

    .

    Wide Area Networks,

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    point to point.

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    2.6.2.

    (point to multipoint)

    ,

    .

    LAN

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    point to multipoint.