Glossary
Apple Compatible Driver An interface software module for applications other than Photoshop that
support Apple scanners.
Application Software Software that is used to perform a specific function, e.g., image processing,
OCR (Optical Character Recognition), or DTP (Desktop Publishing).
Black and White A 1-bit image file capable of displaying only black and white image data
with no intermediate gray levels.
DIP Switch A small switch mounted in or on computer equipment that sets certain
parameters.
Expansion Slot A connector and bracket system in a computer into which an expansion or
interface card can be inserted to add functions to a computer system.
Expansion Slot Cover A metal or plastic dust cover that covers the exterior “hole” of an expansion
slot.
Folder The icon in Macintosh systems in which software icons can be placed.
Grayscale An 8-bit image file capable of displaying up to 256 gray levels.
Halftone Pattern The pattern that is used when varying the ratio of black and white pixels in
halftone image.
Halftone A 1-bit image file capable of displaying gray levels by varying the ratio of
black and white pixels within a given area.
Icon The graphical representation of a computer file or piece of computer
software.
Indicator Panel The area of the scanner that shows the LED indicators.
Interface Card A card that provides additional functions or capabilities for your computer.
These cards are called by various names such as adapter, add-in card,
controller card, expansion card, option card, or by the names of the functions
thy do such as fax/modem cards, network card, scanner card, etc. This card
is inserted into an expansion slot to allow the connection of a peripheral
device to a PC.
Non-TWAIN Driver An interface system that does not follow the TWAIN standard and is
designed for a specific software package and a specific image input device.
Object Glass The tempered glass of the scanner where documents or object to be scanned
are placed.
Optical Assembly The component system of the scanner that contains all the scanner’s optical
components. Sometimes referred to as a carriage or carriage assembly.
Peripheral Device A device attached to a computer that adds functions to a computer system.
Power Indicator The indicator that glows when the scanner’s power cable is connected to the
scanner and “live” outlet and the power switch is turned on.
Ready Indicator The indicator that glows when the scanner is ready to be used.
SCSI Chain One or more SCSI devices connected to the same SCSI controller.
SCSI Device A device that uses the SCSI interface to connect to a computer.
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