Operating instructions

caching The act of holding data in cache memory for faster access and use.
card Generic term for anything that you can snap into an expansion slot.
card services The uppermost level of PCMCIA services. The card services
level recognizes the function of a particular PC Card and provides the special
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ized drivers necessary to make the card work.
CardBus 32-bit PC Cards that can support up to eight devices on each card.
Electrically incompatible with earlier PC Cards (3.3 V versus 5 V).
case The metal or plastic enclosure for the system unit.
CAT 3 Category 3 wire; a TIA/EIA standard for UTP wiring that can operate
up to 20 megabits per second.
CAT 5 Category 5 wire; a TIA/EIA standard for UTP wiring that can operate
up to 100 megabits per second.
CAT 5e Category 5e wire; a TIA/EIA standard for UTP wiring that can oper-
ate up to 1 gigabit per second.
CAT 6 Category 6 wire; a TIA/EIA standard for UTP wiring that can operate
up to 10 gigabits per second.
catastrophic failure Occurs when a component or whole system will not
boot; usually related to a manufacturing defect of a component. Could also be
caused by overheating and physical damage to computer components.
CCFL (cold cathode fluorescent lamp) A light technology used in LCDs and
flatbed scanners. CCFLs use relatively little power for the amount of light they
provide.
CD quality CD-quality audio has a sample rate of 44.4 KHz and a bit rate of
128 bits.
CD-DA (CD-digital audio) A special format used for early CD-ROMs and all
audio CDs; divides data into variable length tracks. A good format to use for au
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dio tracks but terrible for data due to lack of error checking.
CD-I CD Interactive “green disk” format by Philips; designed to play com
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pressed movies.
GLOSSARY 13
Passport / Mike Meyers‘ A+ Certification Passport / Meyers / 226308-3 / Glossary
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