1. Chapter 6 Output

2. video audio text graphics What is Output? What Is output? v Data that has been processed into a useful form, called information p. 6.2 Fig. 6-1 Next

3. What Are Output Devices? What is an output device? v Any hardware component that can convey information to a user printer monitor Click to view video p. 6.4 Next speakers

4. Display Devices What is a display device? v Television-like v Information on a display device sometimes is called soft copy p. 6.4 Next

5. v Large sealed, glass screen v Screen coated with tiny dots of phosphor material v Pixel, or picture element, is single point in electronic image v Three dots (red, blue, and green) combine to make up each pixel Display Devices What is a CRT monitor? CRT monitor screen cathode ray tube p. 6.5 Fig. 6-3 Next

6. Display Devices What is a liquid crystal display (LCD) monitor? v Type of flat-panel display v Uses liquid crystals between two sheets of material to present information on screen v Electric current passes through crystals, which creates images on the screen p. 6.5 Fig. 6-4 Next

7. Display Devices Where are some features of LCD screens? v Lightweight and compact v Consumes less than one-third of the power than does a CRT monitor v Ideal for notebook and handheld computers p. 6.6 Fig. 6-5 Next

8. Display Devices What are the two technologies used for LCD monitors? Passive-matrix display Color often not as bright Images best viewed when working directly in front of display Active-matrix display Can display high-quality color viewable from all angles p. 6.8 Next

9. Should be fast enough to maintain a constant, flicker-free image High-quality monitor will provide refresh rate of at least 75 hertz Display Devices What is refresh rate? v Speed at which monitor redraws images on the screen Image on the screen redraws itself 75 times per second p. 6.9 Next

10. Printers What is a printer? v Output device that produces text and graphics on paper v Result is hard copy, or printout v Two orientations portrait orientation landscape orientation Click to view animation p. 6.12 Fig. 6-14 Next

11. Printers What is an impact printer? v Forms characters by striking a mechanism against ink ribbon that physically contacts paper v Ideal for printing multipart forms v Can withstand dusty environments, vibrations, and extreme temperatures p. 6.14 Next

12. Printers What is a dot-matrix printer? v Impact printer that produces printed images when tiny wire pins on print head mechanism strike inked ribbon v Most use continuous-form paper continuous-form paper p. 6.14 Fig. 6-17 Next

13. Printers What is a non-impact printer? v Forms characters and graphics on piece of paper without actually striking paper p. 6.15 Next ink-jet printer thermal printer laser printer

14. Printers What is an ink-jet printer? v Nonimpact printer forms characters and graphics by spraying tiny drops of liquid ink onto piece of paper v Most popular type of color printer for home use Click to view Web Link then click Ink-Jet Printers p. 6.15 Fig. 6-19 Next

15. Printers What is the resolution of a printer? v Sharpness and clarity of characters v Measured by number of dots per inch (dpi) printer can output 300 dpi1,200 dpi600 dpi p. 6.15 Fig. 6-20 Next

16. Printers What is a laser printer? v High-speed, high- quality nonimpact printer v Prints text and graphics in very high-quality resolution, ranging from 600 to 1,200 dpi v Typically costs more than ink-jet printer, but is much faster Click to view Web Link then click Laser Printers p. 6.16 Fig. 6-17 Next

17. Printers What is a plotter? p. 6.22 Next v Sophisticated printer used to produce high- quality drawings v Large-format printer similar to plotter and is used to print quality color prints plotter large-format printer

18. Speakers and Headsets What is an audio output device? v Computer component that produces music, speech, and other sounds v Speakers and headsets are common devices p. 6.23 Fig. 6-29 Next woofer speakers