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GLOSSARY
XEROX DOCUPRINT 4850/4890 IPS INSTALLATION PLANNING GUIDE GLOSSARY-3
byte Fixed number of bits (in data processing, usually 8) operated upon as
a unit. A byte may represent a character, a machine instruction, or
some other logical unit of information.
CCU Customer changeable unit. In the DocuPrint Models 4850 and 4890,
the unit is removed to change the color of the dry ink installed in the
printer. Consists of the color developer housing and the dry ink bottle.
CCU changeout cart Cart used to remove and install the customer changeable unit for
changing the color dry ink installed in the printer.
carriage return Control character that (unless set to be interpreted as a line end)
causes the printing system to start printing at the left margin of the
current line.
case–sensitive Treating lowercase and uppercase characters differently.
central processing unit (CPU) Interprets and executes instructions, performs all operations and
calculations, and controls input and output units and auxiliary
attachments.
channel 1. In data communications, a path or line that enables two or more
devices to communicate (sometimes called a circuit, facility, or
link). 2. In computers, a path for communication between the
central processing unit (CPU) and input/output units, or between the
CPU and peripheral devices.
character Single printable letter (A-Z), numeral (0-9), symbol (& % #), or
punctuation mark (, . ! ?) used to represent data. Characters can also
be nonprinting, such as space, tab, or carriage return.
character cell Digitized space containing a single character within a font set.
character code Code representing alphanumeric information, for example, ASCII.
character set Number of different characters used by a particular device, including
alphabetic, numeric, and special characters such as symbols.
characters per inch (cpi) Designates the number of characters per inch for a particular
typeface. Refer to pitch.
client software Software that manages the submission of print jobs to the Printer
Controller.
client workstation Workstation connected to the network used to create print jobs
(documents) and submit them to the Printer Controller.
command Statement entered that instructs the system to perform an operation.