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CISC
Abbreviation for Complex Instruction-Set Computer: see RISC
CJK
abbreviation for Chinese, Japanese and Korean. A variant, CJKV, means Chinese, Japanese, Korean, and Vietnamese.
clean room
An enclosed spaced pressurized to keep dust particles from entering the room atmosphere where high-end scanners are in use.
ClearType
A Microsoft technology that improves the appearance of TrueType fonts on LCD displays by individually addressing the red, green and blue subpixels of the display (The system provides much less of a benefit on CRT screens.) Microsoft claims it is a breakthrough technology even though Apple implemented a similar technique in 1976 for the Apple II computer
client A computer that receives information from a server or a piece of software that is doing the job of communicating with a remote server, (e.g. an FTP application or an e-mail program).
clip art
Noncopyrighted illustrations, characters, figures, cartoons, photographs and designs that can be purchased in printed form, or digitally on floppy disks and optical discs for use in artwork.
clipboard
A part of memory where blocks of text or graphics are temporarily stored after they are cut or copied. Anything stored in the clipboard can be copied from there and pasted into another document. The clipboard feature is standard on the Macintosh and with Windows software.
cloning
An image processing function that is used to duplicate a pixel or many pixels from one area of a picture to another picture area. This pixel manipulation may add or remove detail. Some manufacturers call this function pixel swapping.
CLS
Abbreviation for Color Layout System, the Crosfield (DuPont) Lightspeed software program
CLUT
Abbreviation for Colour LookUp Table, stored computer information that is used to translate from one color space to another. Rather than recalculating in each instance, preset values are referenced.
CLV
Abbreviation for Constant Linear Velocity: term used in optical disks and CD-ROMs to indicate that the rotational speed of the disk varies depending on what track is being read.
CMP
Graphics file format that is the property of LEAD Technologies and is used by Corel (.crd files) among others. It provides better compression than JPEG at comparable quality.
CMS
Abbreviation for Colour Management System
CMY
See YMCK
CMYK
Cyan, Magenta, Yellow, Black - The four process colors used in color printing
CO
Abbreviation for Chapter Opening
coarse data file
A digitized image file of an original scene that was sampled at the resolution of a video monitor, approximately 512 x 512 or 1024 x 1024 pixels, and used to make judgment about such things as the scanner setup or the quality of the original copy -also called a low resolution file or a viewfile. It contains less picture information than a high resolution picture file that is sampled at a minimum of four pixels per output halftone dot.
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