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Glossary
cache memory: A section of very fast memory in which frequently used information is duplicated for quick access. Accessing data from cache is faster than accessing it from the computer's main memory. See also L1 cache, L2 cache.
capacity: The amount of data that can be stored on a magnetic storage device such as a floppy diskette or hard disk drive. It is usually described in terms of kilobytes (KB), where one KB = 1024 bytes, megabytes (MB), where one MB = 1024 KB and gigabytes (GB), where one GB = 1024 MB.
CD: An individual compact disc. See also
character: Any letter, number, punctuation mark, or symbol used by the computer. Also synonymous with byte.
chassis: The frame containing the computer.
chip: A small semiconductor containing computer logic and circuitry for processing, memory, input/output functions and controlling other chips.
click: To press and release the pointing device's primary button without moving the pointing device. In the Windows® operating system, this refers to the pointing device's left button, unless otherwise stated. See also
CMOS: Complementary
cold start: Starting a computer that is currently off (turning on the power).
COM1, COM2, COM3 and COM4: The names assigned to the serial and communication ports.
commands: Instructions you enter at the terminal keyboard that direct the actions of the computer or its peripheral devices.
compatibility: 1) The ability of one computer to accept and process data in the same manner as another computer without modifying the data or the media upon which it is being transferred. 2) the ability of one device to connect to or communicate with another system or component.
components: Elements or parts (of a system) which make up the whole (system).
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