计算机专业英语 -第7章1

Chapter 7 Input and Output Introduction Do you ever wonder how information gets into your computer and comes out in a form you can use? Input devices convert what we understand into what the system unit can process. Output devices convert what the system unit has processed into a form that we can understand. Input and output devices are the focus of this chapter. Competencies (Page 1 of 2) Define input Describe keyboard entry, pointing devices, and scanning devices Discuss image capturing devices, including digital cameras, digital video cameras, and audio input devices Competencies (Page 2 of 2) Define output Describe monitors, printers, and audio output devices Discuss combination input and output devices, including fax machines, multifunctional devices, Internet telephones, and terminals active-matrix monitor (193) A type of flat-panel monitor where each pixel is independently activated. (See also thin film transistor (TFT) monitor)有源矩阵显示器 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.数据投影仪 digital camera : (188)Images are recorded digitally on a disk or in the camera’s memory rather than