HP Compaq Presario, Руководство пользователя

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LOSSARY
3
byte
Eight bits of data strung together to
make a message that the computer can
interpret. Most information is organized
into bytes, the standard unit of data. One
byte of data is required to represent a
single character that you can see on the
screen (a letter, number, punctuation mark,
or other symbol). For example, the byte
01001000 represents the capital letter H.
See bit .
C
cable modem
A modem that allows you
to access the Internet through your cable
service provider. Continuously connected
to the Internet, it allows high-speed,
high-capacity data transfer.
CD (compact disc)
Media used in a CD
player (digital recordings of music) or
CD-ROM drive (computer data, such as
programs). Both types of compact disc are
read-only; once data is recorded or written
to them, they can only be played or read.
CD-DA
Compact disc-digital audio.
Jointly developed by Philips and Sony and
launched in October, 1982, CD-DA was
the first incarnation of the compact disc,
used to digitally record and play back
music. The standard under which CD-DA
discs are recorded is known as the Red
Book.
CD Extra, CD Plus, or Enhanced CD
A multisession CD containing a number of
audio tracks in the first session, and one
CD-ROM XA data track in the second
session. Additional characteristics are
defined in the Blue Book standard. An
alternative to mixed-mode for combining
standard CD-DA audio, which can be
played in a normal audio player, and a
computer application on a single CD.
CD-I
A compact disc format developed by
Philips, designed to allow interactive
multimedia applications to be run on a
player attached to a television. The
standard document defining CD-I is called
the Green Book.
CD-R (CD-recordable)
Media used in a
CD-R drive to record or write data that
cannot be erased. The base is a circular
piece of clear plastic, molded with a spiral
track to ensure that the CD-R drive follows
the same spiral path as that stamped on a
conventional CD. The plastic layer is
covered first with an organic dye that is
photosensitive, then a reflective layer of
silver alloy or 24-carat gold, and finally
lacquer to protect the metal from air and
dust. Depending on the dye and metal used
in manufacture, the disc may be gold/gold
(gold on top and bottom), green/gold,
silver/blue, or silver/silver. When referring
to CD media, “CD-R” is often used to refer
to write-once CDs in contrast to CD-RW.