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Definition: CIS

(1) (CompuServe Information Service) See CompuServe.

(2) (Card Information Structure) A data structure on a PC Card that contains information about the card's contents. It allows the card to describe its configuration requirements to its host computer.

(3) (Contact Image Sensor) A type of scanning sensor used in low-cost scanners that is smaller than a CCD. Although it allows for smaller, lighter scanners to be built, color fidelity and image quality are not as good as CCD. See CCD sensor and CMOS sensor.