Glossary
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 only displaying black and white image
data with no intermediate gray levels.
Document Cover:
The plastic cover that is lowered over a document on the scanner’s
object glass.
Grayscale:
An 8-bit image file capable of representing all tones and colors in the
image using 256 shades of gray.
Icon:
The graphical representation of a computer file or piece of computer
software.
Indicator Panel:
The area of the scanner that contains the LED indicators to show
scanner status.
Non-TWAIN Driver:
An interfacing 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 objects to be
scanned are placed.
Optical Assembly:
The component system of the scanner that contains all the optical
components. Sometimes referred to as a carriage or carriage assembly.
Peripheral Device:
A device attached to a computer that adds functionality to a computer
system.
Ready Indicator:
The indicator that glows when the scanner’s power cable is connected
to the scanner and a “live” outlet and the power switch is turned on.
TWAIN:
A standardized interfacing system that allows many different software
applications to access many different image input devices. TWAIN is
currently more popular on the Windows platform than it is on the
Macintosh.
UTA:
UMAX Transparency Adapter; a scanner option that consists of
additional hardware allowing the scanning of transparent originals,
such as slides or X rays.
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