CD-ROM disk drive

   A disk device that uses compact disc technology for information storage. Many CD-ROM disk drives also have headphone jacks, external speaker jacks, and a volume control. CD-ROM disk drives designed for computer use are more expensive than audio CD players, because CD-ROM disk drives central processing unit are manufactured to much higher tolerances. If a CD player misreads a small amount of data, the human ear probably will not detect the difference; if a CDROM disk drive misreads a few bytes of a program, the program will not run.
   The two most popular CD-ROM drive interface cards are SCSI and ATAPI (AT Attachment Packet Interface). ATAPI is part of the Enhanced IDE specification introduced by Western Digital in 1994 and lets you plug an IDE CD-ROM directly into an IDE controller on the system's motherboard. Other CD-ROM drives may use the computer's parallel port or a PCMCIA connection.

Dictionary of networking . 2014.

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