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Glossary
bitmapped Display image generated bit by bit for each point or dot. A
bits per second In serial communication, the instantaneous bit speed with which (bps) a device or channel transmits a character.
blocking Process of combining two or more records into a single block of data which can then be moved, operated upon, stored, etc., as a single unit by the computer.
block length Number of characters or bytes contained in a block of data (the block is treated as a unit within the computer). Block length is usually invariable within a system and may be specified in units such as records, words, computer words, or characters.
boot To load a program’s initial instructions of a program into the computer’s memory. These instructions then direct the loading of the rest of the program. Booting may require entry of a few commands at the keyboard or the flip of a switch to begin the process.
break page See header page.
buffer Compartment of memory in which data is stored during transfer from one device to another. Useful for (1) accumulating data into blocks before storage or processing, and (2) for adjusting differences of speed between devices, or between a device and a communicating facility.
bypass transport Optional module that moves paper from the printer to a finishing device.
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 4850, 4890, and 92C, the unit 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 used to remove and install the customer changeable unit for cart 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.
channel 1. In data communications, a path or line that enables two or more devices to communicate (sometimes called a circuit, facility, or link).
Installation Planning Guide | 5 |