Microtek ScanMaker IIG User Manual page 261

Shadows
The darkest areas of an image.
Single-bit image
Single-bit images are the simplest kind of image, using just one bit of data
to record each pixel. Single-bit images come in two types: line art, and
halftone.
Text scanning
One of the most common uses for scanners, as it eliminates the need for
retyping. Scanners scan text through the use of OCR software and deliver
text to your word processor.
Terminator
A special resistor pack or a block of resistors that tells the computer where
the end of the SCSI chain is and ensures the electrical integrity of the bus
signals. Terminators act as a filter to clear out electrical "noise" caused by
multiple cables and devices.
Transparent Media Adapter (TMA)
A scanner accessory used for scanning transparencies, slides and film-
strips. The TMA has a unique lighting device that prevents transparent
originals from being exposed to too much light and getting washed out as a
result.
Twain
A software industry standard that allows software applications and hard-
ware imaging devices to communicate directly. ScanWizard for Windows
is a Twain-compliant program, which means it can be used with other
Twain-compliant applications like Adobe Photoshop. In practical terms,
this means that when a scan is performed through ScanWizard, the scan is
automatically placed inside Photoshop.
Zoom
The ability to magnify the view of an image in the preview window.
Appendix J: Glossary J-7