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Chapter 6 Output Slides Created by Kevin McHale The Four Categories of Output Output is data that has been processed into a useful device Four Categories Text Graphics Audio Video CRT Monitors Desktop monitors that are similar to televisions because they contain Cathode Ray Tubes CRT Available in a variety of sizes Most common range from 15 to 22 inches Use electron beams to produce images Quality of CRT Monitor Three factors affect the monitor s quality Resolution Dot Pitch Pixel Pitch Refresh Rate Graphics Cards Converts digital output from the computer into an analog video signal Sends the signal through a cable to the CRT monitor Monitor displays the output on the screen The number of colors a graphics card displays is determined by its bit depth Flat Panel Display A flat panel display is a display with a shallow depth that does not use CRT technology Types of flat panel displays Flat panel monitors LCD displays Gas Plasma displays HDTV displays Flat Panel Displays A flat panel monitor is a desktop monitor that uses a liquid crystal display instead of a cathode ray tube A liquid crystal display LCD uses a liquid compound to present information on a screen Gas Plasma Displays A gas plasma display uses gas plasma technology Substitutes a layer of gas for the liquid crystal material in a flat panel monitor High Definition Television HDTV is the most advanced form of digital television Provides resolution up to 1920 x 1080 pixels Works with digital broadcasting signals Transmits digital sound Supports wide screens Printers A printer is an output device that produces text and graphics on a physical medium Two types of printers Impact Printers Nonimpact Printers Impact Printers Impact printers form characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper Types of Impact Printers Dot matrix printer Line printer Nonimpact Printers Nonimpact printers form characters and graphics on a piece of paper



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