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character set. (1) A finite set of different characters that is complete for a given purpose; for example, the character
set in ISO Standards 646, “7-bit Coded Character Set of Information Processing Interchange.” (2) A group of
characters used for a specific reason; for example, the set of characters a printer can print. character set.
code page. A font library member that associates code points and character identifiers.
code point. An element of a code page or site in a code table to which a character can be assigned.
command. A control signal that initiates an action or the beginning of a sequence of actions.
configuration. The arrangement of a computer system or network as defined by the nature, the number, and the
chief characteristics of its functional units. More specifically, the term configuration may refer to a hardware
configuration or a software configuration.
configure. The procedure used to customize the printer to a specific operating and/or communication environment.
connector. A mechanical device for establishing electrical flow.
constant data. Data that does not change; for example, the company letterhead and standard text in form letters, or
the headings and boxes on a preprinted form. Contrast with
variable data
.
constant-spaced font. A font in which the graphic characters are contained in character cells of uniform size. The
distance between reference points of adjacent graphic characters is constant in the in-line progression. The white
spaces between graphic characters may vary. Synonymous with
fixed-space font
. Contrast with
proportionally-spaced
font
.
controlling computer. The processing unit to which the printer is attached through a communication attachment.
controlling computer system. The data processing system to which a network is connected and with which the
system can communicate.
control storage. A portion of storage that contains microcode and other data.
control unit (CU). (1) A device that controls input and output operations at one or more devices. (2) The electronics
and code that control the printer and the communication attachment.
CPI. characters-per-inch
CU. See
control unit
.
curl. See
paper curl
.
customer engineer (CE). An IBM service representative who performs maintenance services for IBM hardware.
Synonymous with
IBM service representative
.
cut-sheet paper. Paper that, unlike continuous forms, is cut into sheets.
D
data stream. (1) All data transmitted through a data channel in a single read or write operation. (2) A continuous
stream of data elements being transmitted, or intended for transmission, in character or binary-digit form, using a
defined format.
default. An alternative value, attribute, or option that is assumed when none has been specified.
degraded operation. A loss in performance caused by environmental or system conditions.
diagnostic. Pertaining to the detection and isolation of errors in programs and faults in equipment.
disable. To make non-functional. Contrast with
enable
.
DOD. document on demand.
DP. data processing. This describes the quality of certain fonts.
286 4247 Printer Model A00 User’s Guide