Compact Disc—Read-Only Memory

Compact Disc—Read-Only Memory
   Abbreviated CD-ROM. A high-capacity, optical storage device that uses the same technology used to make ordinary music discs to store large amounts of information. A single 4.72-inch disc can hold up to 650MB.
   CD-ROMs are important components of multimedia applications. They are also used to store encyclopedias, dictionaries, and other large reference works, as well as libraries of fonts and clip art for desktop publishing. CD-ROMs have replaced floppy disks as the distribution mechanism for software packages, including network operating systems and large applications; you can load the whole package from a single compact disc, and you can load an operating system from a set of discs.
   A CD-ROM uses the constant linear velocity data encoding scheme to store information in a single, spiral track, divided into many equal-length segments. To read data, the CD-ROM disk drive must increase the rotational speed as the read head gets closer to the center of the disk and must decrease as the head moves back out.

Dictionary of networking . 2014.

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  • compact disc read-only memory — noun 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 • Hypernyms: ↑compact disk, ↑compact disc,… …   Useful english dictionary

  • Compact Disk Read Only Memory — compact disc which can only be read, CD ROM …   English contemporary dictionary

  • read-only memory — noun (computer science) memory whose contents can be accessed and read but cannot be changed • Syn: ↑ROM, ↑read only storage, ↑fixed storage • Topics: ↑computer science, ↑computing …   Useful english dictionary

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  • Compact disc — Disque compact Pour les articles homonymes, voir CD (homonymie), Disque et Compact. Disque compact …   Wikipédia en Français

  • read-only storage — noun (computer science) memory whose contents can be accessed and read but cannot be changed • Syn: ↑read only memory, ↑ROM, ↑fixed storage • Topics: ↑computer science, ↑computing …   Useful english dictionary

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