Chapter06 - Chapter 6 Output Chapter 6 Objectives Describe...

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Chapter 6 Output
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Chapter 6 Objectives Describe the four categories of output Describe characteristics of a CRT monitor and factors that affect its quality Explain the relationship between a video card and CRT monitor Summarize the characteristics of LCD monitors, LCD screens, gas plasma displays, and HDTVs Differentiate between an impact printer and a nonimpact printer Describe the methods used for wireless printing Describe the uses of speakers and headsets Identify the output characteristics of fax machines and fax modems, multifunction peripherals, data projectors, joysticks, and wheels Identify output options for physically challenged users Next Summarize the characteristics of ink-jet printers, photo printers, laser printers, thermal printers, mobile printers, label and postage printers, and plotter and large-format printers
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What is Output? What is output ? p. 292 Fig. 6-1 Next Data that has been processed into a useful form, called information Output device is any hardware component that can convey information to user
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Display Devices What is a display device ? p. 294 Fig. 6-2 Next Output device that visually conveys information Information on display device sometimes called soft copy Monitor houses display device as separate peripheral
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CRT Monitor What is a CRT monitor ? p. 294 Fig. 6-3 Next Contains cathode-ray tube (CRT) Screen coated with tiny dots of phosphor material Each dot consists of a red, blue, and green phosphor Common sizes are 15, 17, 19, 21, and 22 inches Viewable size is diagonal measurement of actual viewing area
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CRT Monitor What is the ENERGY STAR program ? p. 295 Fig. 6-4 Next Encourages manufacturers to create energy-efficient devices that require little power when not in use Monitors and devices meeting guidelines display ENERGY STAR label
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CRT Monitor What is resolution ? p. 295 Fig. 6-5 Sharpness and clarity of image Refresh rate is speed at which monitor redraws images on screen Higher resolution makes image sharper, displays more text on screen, makes some elements smaller Next
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CRT Monitor How does video travel from the processor to a CRT monitor? p. 297 Fig. 6-6 Next Step 1. The processor sends digital video data to the video card. Step 2. The video card’s digital-to-analog converter (DAC) converts the digital video data to an analog signal. Step 3. The analog signal is sent through a cable to the CRT monitor. Step 4. The CRT monitor separates the analog signal into red, green, and blue signals. Step 5. Electron guns fire the three color signals to the front of the CRT. Step 6. An image is displayed on the screen when the electrons hit phosphor dots on the back of the screen. Video card (also called a graphics card) converts digital output from computer into analog video signal
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CRT Monitor What are video standards?
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This note was uploaded on 06/21/2009 for the course CHEM 130 taught by Professor Kia during the Spring '09 term at Abraham Baldwin Agricultural College.

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Chapter06 - Chapter 6 Output Chapter 6 Objectives Describe...

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