UMAX Technologies Astra 2400S, Operation Manual

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Glossary
ADF: Automatic Document Feeder; a scanner option which automatically feeds and scans multiple page
documents.
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).
ASPI:
SCSI communication standard developed by Adaptec .
BET:
Bit Enhancement Technology. This is a digital image processing technique which increases the
number of bits used per pixel in order to acquire a more vivid and clearer image.
Black and White:
A 1-bit image file capable of only displaying black and white image data with no
intermediate gray levels.
CCD:
Charged-Coupled Device. An electronic light sensing device used to convert light waves into
electronic signals.
DIP Switches:
Small switches mounted in or on computer equipment that set certain parameters.
Document Cover:
The plastic cover that is lowered over a document on the scanner’s object glass.
Driver:
The driver is a software program that tells the computer how to communicate with and operate
scanner. The driver can be a stand alone application or can be accessed from within another application.
DPI (Dots-per-inch):
A measurement of resolution. The higher the dpi, the higher the resolution of the
image.
Expansion Slot Cover:
A metal or plastic plate dust cover that covers the exterior “hole” in an expansion
slot.
Folder:
An electronic storage area used to store and organize files and other folders and is often
represented on a computer screen by a folder-like icon
Grayscale:
An 8-bit image file capable of displaying up to 256 gray levels.
I/O Base Address:
An address that is used for communication between a host computer and an expansion
or interface card. All cards in a computer system must be set to different I/O addresses.
Icon:
The graphical representation of a computer file or piece of computer software.
Image-Editing Software:
A software program used to edit or alter image files.
Indicator Panel:
The area of the scanner that contains the LED indicators to show scanner status.
Interface Card:
A card that is inserted into an expansion slot to allow the connection of a peripheral
device to a PC.
Object Glass:
The tempered glass of the scanner where documents or objects to be scanned are placed.
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