Toshiba 8000 series, Руководство пользователя

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Part III: Appendixes
Glossary
238
bus speed: The speed at which the central processing unit (CPU)
communicates with the other elements of the computer. For
example, the speed at which data moves between the CPU and the
serial ports.
byte: A sequence of eight bits. A byte is the smallest addressable unit of
data. Each byte represents an integer up to 255 in decimal (11111111
in binary, or FF in hexadecimal), or a character (such as a letter,
numeral, or other symbol). See also
binary , bit, gigabyte,
hexadecimal, kilobyte , megabyte .
C
cache: An area of very fast memory in which frequently used
information is duplicated for quick access. Accessing data from
cache is faster than accessing it from system Random Access
Memory. See also
disk cache .
capacity: The amount of data that can be stored in a computer’s memory
or on a storage device such as a hard disk, removable disk, or
CD-ROM. Capacity is usually measured in terms of kilobytes (KB),
megabytes (MB) or gigabytes (GB). See also
gigabyte, kilobyte ,
megabyte .
card: See board .
CardBus: A PCMCIA standard which adapts the PC Card slot to accept
CardBus PC Cards. Inserting a CardBus Card establishes a 32-bit
interface between the computer’s central processor and the high-
speed peripheral device connected to the PC Card. CardBus delivers
faster data transfer than previous PC Card interfaces.
CD (Compact Disc): Audio format in which sound is digitally encoded
on a 12 cm disc. An optical laser encodes and decodes the digital
data to produce exceptionally pure sound.
CD-ROM (Compact Disc Read Only Memory): A high-capacity storage
medium that uses laser optics instead of magnetic means for reading
data. The computer can read data from these discs, but cannot write
data to the discs.
central processing unit (CPU): The chips where all the computing takes
place. The CPU is often referred to as the “brain” of the computer. It
takes information from outside sources, such as memory or
keyboard input, processes the information and sends the results to
another device that uses the information.