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Glossary 385
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ColorSync
Macintosh software that is designed so you get WYSIWYG (What You See Is What
You Get) color output. This software prints colors as you see them on your screen.
cpi
See characters per inch.
default
A value or setting that takes effect when the equipment is turned on, reset, or
initialized.
DMA
Direct Memory Access. A data transfer feature that by-passes a computer’s CPU
and allows direct communication between the computer’s memory and
peripheral devices (such as printers).
dot matrix
A method of printing in which each letter or symbol is formed by a pattern
(matrix) of individual dots.
dpi
Dots per inch. The dpi measures the resolution. See also resolution.
drive
A memory device, such as CD-ROM, hard disk, or floppy disk. In Windows, a
letter is assigned to each drive for easy management.
driver
A software program that sends instructions to a computer peripheral to tell it
what to do. For example, your printer driver accepts print data from your word
processor application and sends instructions to the printer on how to print this
data.
economy printing
Printing in which images are printed with fewer dots to save ink.
error diffusion
Error diffusion blends individual colored dots with the colors of the surrounding
dots to create the appearance of natural colors. By blending colored dots, the
printer can achieve excellent colors and subtle color gradation. This method is
best suited for printing documents that contain detailed graphics or photographic
images.