计算机专业英语影印版(ComputingEssentials)课后答案大全——单元ChapterInputandOutput.docVIP

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计算机专业英语影印版(ComputingEssentials)课后答案大全——单元ChapterInputandOutput.doc

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计算机专业英语影印版(ComputingEssentials)课后答案大全——单元ChapterInputandOutput

Key Terms Key Term Definition active-matrix monitor (193) A type of flat-panel monitor where each pixel is independently activated. (See also thin film transistor (TFT) monitor) bar code (187) The vertical zebra-striped marks printed on product containers. bar code reader (187) Contains photoelectric cells that scan or read bar codes. (See also bar code scanner) bar code scanner (187) Contains photoelectric cells that scan or read bar codes. (See also bar code reader) cathode-ray tube (CRT) monitor (193) The most common type of monitor that are typically placed directly on the system unit or on the desktop. clarity (192) The quality and sharpness of the displayed images. combination key (183) A key, that when held down in combination with another key, performs an action. cordless mouse (185) A battery-powered device that typically uses radio waves or infrared light waves to communicate with the system unit. (See also wireless mouse) data projector (194) Specialized devices similar that connect to microcomputers and project computer output just as it would appear on a monitor. digital camera (188) Images are recorded digitally on a disk or in the camera’s memory rather than on film digital media player (198) A specialized device for storing, transferring, and playing audio files. (See also digital music player) digital music player (198) A specialized device for storing, transferring, and playing audio files. (See also digital media player) digital video camera (189) Record motion digitally on a disk or in the camera’s memory. display screen (192) A computer device that presents visual images of text and graphics. (See also monitor) dot-matrix printer (197) A type of printer that forms characters and images using a series of small pins on a print head. dot pitch (193) A function of a monitor that is the distance between each pixel. (See also pixel pitch) dots-per-inch (dpi) (195) The measurement of printer resolution, the more dots-per-inch the better the qua