| podobné slovo | definícia |
cdr
(mass) | CD-R
- Compact Disc Recordable |
cdrom
(mass) | CD-ROM
- Compact Disc Read-Only Memory |
CD-ROM
(gcide) | CD-ROM \CD-ROM\ n.
a compact disk that is used with a computer (rather than with
an audio system); a large amount of digital information can
be stored and accessed but it cannot be altered by the user.
Syn: compact disc read-only memory.
[WordNet 1.5] |
cd-r
(wn) | CD-R
n 1: a compact disc on which you can write only once and
thereafter is read-only memory [syn: CD-R, {compact disc
recordable}, CD-WO, compact disc write-once] |
cd-rom
(wn) | CD-ROM
n 1: a compact disk that is used with a computer (rather than
with an audio system); a large amount of digital
information can be stored and accessed but it cannot be
altered by the user [syn: CD-ROM, {compact disc read-only
memory}] |
cd-rom drive
(wn) | CD-ROM drive
n 1: a drive that is connected to a computer and on which a CD-
ROM can be `played' |
cd-read-write
(foldoc) | Compact Disc Rewritable
CD-Read-Write
CD-Rewritable
CD-RW
Compact Disc Read-Write
(CD-RW) A rewritable version of CD-ROM. A CD-RW
drive can write about 650 megabytes of data to CD-RW media
an unlimited number of times. Most CD-RW drives can also
write once to CD-R media.
CD-RW media cannot be read by CD-ROM drives built prior to
1997 due to the reduced reflectivity (15% compared to 70%) of
CD-RW media.
CD-RW drives and media are currently (1999) more expensive
than CD-R drives and media. CD-R is sometimes considered a
better technology for archival purposes as the data cannot be
accidentally modified or tampered with, and encourages better
archival practices.
Standard prerecorded CDs have their information permanently
stamped into an aluminium reflecting layer. CD-WR discs have
a phase-change recording layer and an additional silver
(aluminium) reflecting layer.
A laser beam can melt crystals in the recording layer into a
non-crystalline amorphous phase or anneal them slowly at a
lower temperature back to the crystalline state. The different
reflectance of the areas make them appear as the 'pits' and
'lands' of a standard CD.
{Phillips: New Technologies
(http://www-us.sv.philips.com/newtech/cdrewritable.html)}.
See also CD-R and DVD-RAM.
(1999-08-01)
|
cd-rewritable
(foldoc) | Compact Disc Rewritable
CD-Read-Write
CD-Rewritable
CD-RW
Compact Disc Read-Write
(CD-RW) A rewritable version of CD-ROM. A CD-RW
drive can write about 650 megabytes of data to CD-RW media
an unlimited number of times. Most CD-RW drives can also
write once to CD-R media.
CD-RW media cannot be read by CD-ROM drives built prior to
1997 due to the reduced reflectivity (15% compared to 70%) of
CD-RW media.
CD-RW drives and media are currently (1999) more expensive
than CD-R drives and media. CD-R is sometimes considered a
better technology for archival purposes as the data cannot be
accidentally modified or tampered with, and encourages better
archival practices.
Standard prerecorded CDs have their information permanently
stamped into an aluminium reflecting layer. CD-WR discs have
a phase-change recording layer and an additional silver
(aluminium) reflecting layer.
A laser beam can melt crystals in the recording layer into a
non-crystalline amorphous phase or anneal them slowly at a
lower temperature back to the crystalline state. The different
reflectance of the areas make them appear as the 'pits' and
'lands' of a standard CD.
{Phillips: New Technologies
(http://www-us.sv.philips.com/newtech/cdrewritable.html)}.
See also CD-R and DVD-RAM.
(1999-08-01)
|
cd-rom
(foldoc) | Compact Disc Read-Only Memory
CD-ROM
CD-ROM drive
(CD-ROM) A non-volatile optical data storage
medium using the same physical format as audio {compact
discs}, readable by a computer with a CD-ROM drive.
CD-ROM is popular for distribution of large databases,
software and especially multimedia applications. The
maximum capacity is about 600 megabytes. A CD can store
around 640 megabytes of data - about 12 billion bytes per
pound weight.
CD-ROM drives are rated with a speed factor relative to music
CDs (1x or 1-speed which gives a data transfer rate of 150
kilobytes per second). 12x drives were common in April
1997. Above 12x speed, there are problems with vibration and
heat. Constant angular velocity (CAV) drives give speeds up
to 20x but due to the nature of CAV the actual throughput
increase over 12x is less than 20/12.
20x was thought to be the maximum speed due to mechanical
constraints but on 1998-02-24, Samsung Electronics
introduced the SCR-3230, a 32x CD-ROM drive which uses a ball
bearing system to balance the spinning CD-ROM in the drive to
reduce noise.
CD-ROM drives may connect to an IDE interface, a SCSI
interface or a propritary interface, of which there are three
- Sony, Panasonic, and Mitsumi. Most CD-ROM drives can also
play audio CDs.
There are several formats used for CD-ROM data, including
Green Book CD-ROM, White Book CD-ROM and {Yellow Book
CD-ROM}. ISO 9660 defines a standard file system, later
extended by Joliet.
See also Compact Disc Recordable, Digital Versatile Disc.
{Byte, February 1997
(http://byte.com/art/9702/sec17/art5.htm)}.
(2006-09-25)
|
cd-rom drive
(foldoc) | Compact Disc Read-Only Memory
CD-ROM
CD-ROM drive
(CD-ROM) A non-volatile optical data storage
medium using the same physical format as audio {compact
discs}, readable by a computer with a CD-ROM drive.
CD-ROM is popular for distribution of large databases,
software and especially multimedia applications. The
maximum capacity is about 600 megabytes. A CD can store
around 640 megabytes of data - about 12 billion bytes per
pound weight.
CD-ROM drives are rated with a speed factor relative to music
CDs (1x or 1-speed which gives a data transfer rate of 150
kilobytes per second). 12x drives were common in April
1997. Above 12x speed, there are problems with vibration and
heat. Constant angular velocity (CAV) drives give speeds up
to 20x but due to the nature of CAV the actual throughput
increase over 12x is less than 20/12.
20x was thought to be the maximum speed due to mechanical
constraints but on 1998-02-24, Samsung Electronics
introduced the SCR-3230, a 32x CD-ROM drive which uses a ball
bearing system to balance the spinning CD-ROM in the drive to
reduce noise.
CD-ROM drives may connect to an IDE interface, a SCSI
interface or a propritary interface, of which there are three
- Sony, Panasonic, and Mitsumi. Most CD-ROM drives can also
play audio CDs.
There are several formats used for CD-ROM data, including
Green Book CD-ROM, White Book CD-ROM and {Yellow Book
CD-ROM}. ISO 9660 defines a standard file system, later
extended by Joliet.
See also Compact Disc Recordable, Digital Versatile Disc.
{Byte, February 1997
(http://byte.com/art/9702/sec17/art5.htm)}.
(2006-09-25)
|
cd-rw
(foldoc) | Compact Disc Rewritable
CD-Read-Write
CD-Rewritable
CD-RW
Compact Disc Read-Write
(CD-RW) A rewritable version of CD-ROM. A CD-RW
drive can write about 650 megabytes of data to CD-RW media
an unlimited number of times. Most CD-RW drives can also
write once to CD-R media.
CD-RW media cannot be read by CD-ROM drives built prior to
1997 due to the reduced reflectivity (15% compared to 70%) of
CD-RW media.
CD-RW drives and media are currently (1999) more expensive
than CD-R drives and media. CD-R is sometimes considered a
better technology for archival purposes as the data cannot be
accidentally modified or tampered with, and encourages better
archival practices.
Standard prerecorded CDs have their information permanently
stamped into an aluminium reflecting layer. CD-WR discs have
a phase-change recording layer and an additional silver
(aluminium) reflecting layer.
A laser beam can melt crystals in the recording layer into a
non-crystalline amorphous phase or anneal them slowly at a
lower temperature back to the crystalline state. The different
reflectance of the areas make them appear as the 'pits' and
'lands' of a standard CD.
{Phillips: New Technologies
(http://www-us.sv.philips.com/newtech/cdrewritable.html)}.
See also CD-R and DVD-RAM.
(1999-08-01)
|
green book cd-rom
(foldoc) | Green Book CD-ROM
A standard CD-ROM format developed by Philips for CD-i.
It is ISO 9660 compliant and uses mode 2 form 2 addressing.
It can only be played on drives which are XA ({Extended
Architecture}) compatible.
Many Green Book discs contain CD-i applications which can
only be played on a CD-i player but many others contain
films or music videos. Video CDs in Green Book format are
normally labelled "Digital Video on CD"
Green Book was obsoleted by White book CD-ROM in March 1994.
(1994-11-02)
|
white book cd-rom
(foldoc) | White book CD-ROM
A more open CD-ROM standard than
Green Book CD-ROM. All films mastered on CD-ROM after March
1994 use White Book. Like Green Book, it is ISO 9660
compliant, uses mode 2 form 2 addressing and can only be
played on a CD-ROM drive which is XA (Extended
Architecture) compatible. White book CDs are labelled "Video
CD".
(1994-11-02)
|
yellow book cd-rom
(foldoc) | Yellow Book CD-ROM
A CD-ROM format which is ISO 9660 compliant and uses mode
1 addressing. Discs of this type can be played on most drives
and would be appropriate for most multimedia applications
which have been developed for personal computers.
(1994-11-02)
|
cdr
(vera) | CDR
Compact Disk - Recordable (CD), "CD-R"
CDR
Contents of the Decrement Register (IBM, ELISP, CAR)
|
cdra
(vera) | CDRA
Character Data Representation Architecture
|
cdram
(vera) | CDRAM
Cached Dynamic Random Access Memory (RAM, DRAM, IC)
|
cdrm
(vera) | CDRM
Cross Domain Resource Manager (VTAM, SSCP, IBM)
|
cdrom
(vera) | CDROM
Compact Disk - Read Only Memory (CD, ROM), "CD-ROM"
|
cdromxa
(vera) | CDROMXA
Compact Disk - ROM / eXtended Architecture (CD, MPC, ROM),
"CD-ROM/XA"
|
cdrw
(vera) | CDRW
Compact Disk - ReWritable (CD), "CD-RW"
|
ddcdr
(vera) | DDCDR
Double Density Compact Disk - Read (Sony, CD), "DDCD-R"
|
ddcdrw
(vera) | DDCDRW
Double Density Compact Disk - Read Write (Sony, CD), "DDCD-RW"
|