IBM TS2280, Setup, Operator, And Service Manual, Page: 128 / 142

converting them into either the ASCII or
EBCDIC digital character code.
bezel Decorative and safety cover.
bicolored
Having two colors.
bit Either of the digits 0 or 1 when used in
the binary numbering system.
BM or bill of materials
A list of specific types and amounts of
direct materials that are expected to be
used to produce a specific job or quantity
of output.
browser
A client program that initiates requests to
a Web server and displays the
information that the server returns.
buffer
A routine or storage that is used to
compensate for a difference in rate of
flow of data or time of occurrence of
events, when data is transferred from one
device to another.
bus A facility for transferring data between
several devices that are located between
two end points, only one device that is
able to transmit at a specific moment.
byte A string that consists of bits (usually 8)
that are treated as a unit and represent a
character. A fundamental data unit.
C
capacity
The amount of data that can be contained
on storage media and expressed in bytes
of data.
cartridge manual rewind tool
A device that can be fitted into the reel of
a cartridge and used to rewind tape into
or out of the cartridge.
cartridge storage slot
Individual slot that is located within a
magazine that is used to house tape
cartridges.
caution (notice)
A word to call attention to possible
personal harm to people. Contrast with
attention and danger.
CE Customer engineer; field engineer; service
representative.
centimeter (cm)
One one-hundredth of a meter (0.01 m).
Approximately 0.39 inch.
channel command
An instruction that directs a data channel,
control unit, or device to complete an
operation or set of operations.
char Character.
CHK Check.
cleaning cartridge
A tape cartridge that is used to clean the
heads of a tape drive. Contrast with data
cartridge.
command
A control signal that initiates an action or
the start of a sequence of actions.
compact disc (CD)
A disc, usually 4.75 inches in diameter,
from which data is read optically by
using a laser.
compression
The process of eliminating gaps, empty
fields, redundancies, and unnecessary
data to shorten the length of records or
blocks.
concurrent
Refers to diagnostic procedures that can
be run on one control unit while the rest
of the subsystem remains available for
customer applications.
contingent connection
A connection between a channel path and
a drive that is caused when a unit check
occurs during an I/O operation.
controller
A device that provides the interface
between a system and one or more tape
drives.
CP Circuit protector.
ctrl Control.
CU Control unit.
D
danger (notice)
A word to call attention to possible lethal
harm to people. Contrast with attention
and caution.
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IBM TS2280: Setup, Operator, and Service Guide Machine Type 3580 Model H8S