CSC1100 - Chapter04 - Output

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CSC1100 - Chapter04 - Output

  1. 1. Discovering Computers 20081Chapter 4Chapter 4Chapter 4Chapter 4OutputOutputOutputOutput
  2. 2. Chapter 6 ObjectivesChapter 6 ObjectivesChapter 6 ObjectivesChapter 6 ObjectivesDescribe the four categories of outputDescribe the four categories of outputSummarize the characteristics of LCD monitors,LCD screens, and plasma monitorsSummarize the characteristics of LCD monitors,LCD screens, and plasma monitorsDescribe the characteristics of a CRT monitor andDescribe the characteristics of a CRT monitor andSummarize the characteristics of ink-jet printers,photo printers, laser printers, thermal printers,mobile printers, label and postage printers,and plotters and large-format printersSummarize the characteristics of ink-jet printers,photo printers, laser printers, thermal printers,mobile printers, label and postage printers,and plotters and large-format printersDescribe the uses of speakers, headphones,Describe the uses of speakers, headphones,Differentiate between a nonimpact printer and animpact printerDifferentiate between a nonimpact printer and animpact printer2Describe the characteristics of a CRT monitor andfactors that affect its qualityDescribe the characteristics of a CRT monitor andfactors that affect its qualityExplain the relationship between graphics chipsand monitorsExplain the relationship between graphics chipsand monitorsDescribe various ways to printDescribe various ways to printDescribe the uses of speakers, headphones,and earphonesDescribe the uses of speakers, headphones,and earphonesIdentify the output characteristics of fax machinesand fax modems, multifunction peripherals, dataprojectors, joysticks, wheels, and gamepadsIdentify the output characteristics of fax machinesand fax modems, multifunction peripherals, dataprojectors, joysticks, wheels, and gamepadsIdentify output options for physicallychallenged usersIdentify output options for physicallychallenged users
  3. 3. Learning OutcomeLearning OutcomeLearning OutcomeLearning OutcomeSuccessful students will be able to:Describe the characteristics of computer hardwaredevices and explain their functionalities.3
  4. 4. What is Output?What is Output?What is Output?What is Output?What is output?Data that has been processed into a useful formOutput device is any hardware component that can conveyinformation to one or more people4
  5. 5. Display DevicesDisplay DevicesDisplay DevicesDisplay DevicesWhat are some mobile devices that have LCD screens?5
  6. 6. Display DevicesDisplay DevicesDisplay DevicesDisplay DevicesWhat is a display device?Output device that visually conveys text,graphics, and video informationInformation on display device sometimescalled soft copyMonitor houses display device that is packaged6Monitor houses display device that is packagedas separate peripheral
  7. 7. Display DevicesDisplay DevicesDisplay DevicesDisplay DevicesWhat is an LCD monitor (flat panel)?Uses Liquid Crystal DisplayProduce sharp, flicker-free imagesHave a small footprintSome are wall mountableLCD monitor sizes: 15,17,18,19,20,21,22,23 inchesMeasured diagonally7Measured diagonallyMobile devices that contain LCD screens include:Notebook computer (14.1,15.4,17,20.1 inches),Tablet PC (8.4 – 14.1 inches),ultra personal computer (5 – 7 inches),portable media player (1.5 – 3 inches),smart phone (2.5 – 3.5 inches), andPDA (average of 3.5 inches)
  8. 8. FlatFlatFlatFlat----Panel DisplaysPanel DisplaysPanel DisplaysPanel DisplaysWhat about using multiple LCD monitors?Some users position two or more monitors side-by-side or stackedPosition 2 monitors together for wider screen areaConvenient to run multiple programssimultaneously – music editors, web developers,8simultaneously – music editors, web developers,video editors, researchers, gamers, engineers,..
  9. 9. LCDQUALITY9
  10. 10. LCDQUALITY10
  11. 11. FlatFlatFlatFlat----Panel DisplaysPanel DisplaysPanel DisplaysPanel DisplaysWhat is resolution?Sharpness andclarity of imageNumber of horizontaland vertical pixels ina display device11clarity of imageHigher resolutionmakes imagesharper, displaysmore text on screen,makes some elementssmaller
  12. 12. FlatFlatFlatFlat----Panel DisplaysPanel DisplaysPanel DisplaysPanel DisplaysHow do you use an LCD monitor with a video card?GPU, Graphic processing unit: graphics chip – controlmanipulation & display of graphics on a display deviceintegrated on motherboard oron video card (graphics card) in a slot on motherboardVideo card contain a fan/heat sink12Video card contain a fan/heat sinkLCD monitor use digital signal – plugged in a Digital VideoInterface (DVI) port a computerSystem unit has integrated DVI chip or contain a video card witha DVI port,standard monitor port &an S-video port (connect DVD player/video recorder tocomputer)
  13. 13. FlatFlatFlatFlat----Panel DisplaysPanel DisplaysPanel DisplaysPanel Displays13standard monitorportS-video portDVI port
  14. 14. Plasma MonitorPlasma MonitorPlasma MonitorPlasma MonitorWhat is a plasma monitor?Displays image by applying voltage to layer of gasLarger screen size and richer colors than LCD, but are moreexpensive14
  15. 15. LCD & Plasma TechnologiesLCD & Plasma TechnologiesLCD & Plasma TechnologiesLCD & Plasma TechnologiesLCD technology:Contain fluorescent tubes thatemit light waves towardsliquid-crystal cells, which aresandwiched btw 2 sheets ofmaterialElectrical charges passesPlasma monitor features:More than 60 inches widthLarger screen sizes & richercolorsMore expensiveAlso can hand directly on wall15Electrical charges passesthrough the cellsCells twist – cause some lightwaves to be blocked & allowothers to pass through –creating images on the displayPlasma gas technology:Sandwiches a layer of gas btw2 glass platesVoltage applied – gas releasesultraviolet (UV) light – causepixels on screen to glow &form images
  16. 16. FlatFlatFlatFlat----Panel DisplaysPanel DisplaysPanel DisplaysPanel DisplaysWhat is digital television (DTV) and high-definitiontelevision (HDTV)?Many programs can bebroadcast on a singledigital channelAll broadcast stationstransmit digital signalsHigh resolution16Great for game playing, watching movies, and browsing the InternetHDTVHDTV(high(high--definition television)definition television)is the most advanced formof digital TVUses digital signals to producecrisper, higher-quality outputon LCD and plasma televisions
  17. 17. CRT MonitorsCRT MonitorsCRT MonitorsCRT MonitorsWhat is a CRT monitor?Contains cathode-raytube (CRT)Screen coated with tinydots of phosphor materialEach dot consists of a red,17Each dot consists of a red,blue, and green phosphorCommon sizes are 15, 17,19, 21, and 22 inchesViewable size is diagonalmeasurement of actualviewing area
  18. 18. CRT MonitorsCRT MonitorsCRT MonitorsCRT MonitorsCRT - Large, sealed glass tubeScreen placed the front of the tubeScreen coated by tiny dots of phosphor materialEach dot (each pixel) has a red, a green & a blue phosphorElectron beam moves back & forth across the back of the screen –cause dots of screen to glow, producing images on screen18cause dots of screen to glow, producing images on screenLess expensive, produce more heat & uses more power than LCDProduce less Electromagnetic Radiation (EMR)Magnetic field travel at speed of light but for short distanceHigh quality CRT apply MPR II standards – have acceptableEMR levels for monitors
  19. 19. CRT MonitorsCRT MonitorsCRT MonitorsCRT MonitorsWhat is the ENERGY STAR program?Encourages manufacturers to create energy-efficientdevices that require little power when not in useMonitors and devices meeting guidelines displayENERGY STAR label19
  20. 20. CRT MonitorsCRT MonitorsCRT MonitorsCRT MonitorsWhat determines the quality of a CRT monitor?Screen resolutionRefresh rate/scan rate (in Hz, e.g. 68Hz) :Speed at which monitor redraws images on screenNum of times image is drawn per secondText created with a smaller dot pitch is easier to read20Num of times image is drawn per secondShould be fast enough to maintain a constant flicker-free image
  21. 21. PrintersPrintersPrintersPrintersWhat is a printer?Output device thatproduces text andgraphics on a physicalmediumResult is hard copy, orportrait21Result is hard copy, orprintoutTwo orientations: portraitand landscapelandscape
  22. 22. SpeedSpeedSpeedSpeedPrintersPrintersPrintersPrintersHow do you know which printer to buy?BudgetBudgetBudgetBudgetColor orColor orblack and whiteblack and whiteColor orColor orblack and whiteblack and whiteDepends on printing needs22Cost per pageCost per pageCost per pageCost per pagePaper typesPaper typesand sizesand sizesPaper typesPaper typesand sizesand sizesGraphics andGraphics andphoto printingphoto printingGraphics andGraphics andphoto printingphoto printingMultiple copiesMultiple copiesMultiple copiesMultiple copiesSystemSystemcompatibilitycompatibilitySystemSystemcompatibilitycompatibilityWirelessWirelesscapabilitycapabilityWirelessWirelesscapabilitycapabilityFuture needsFuture needsFuture needsFuture needs
  23. 23. PrintersPrintersPrintersPrintersWhat are the various ways to print documents andpictures?23
  24. 24. PrintersPrintersPrintersPrintersWhat is a nonimpact printer?Forms characters and graphics without striking paperInk-jet printersprays tiny drops of liquid ink onto paper oruses heat or pressure to create imagesPrints in black-and-white or color on a variety24Prints in black-and-white or color on a varietyof paper types
  25. 25. PrintersPrintersPrintersPrintersWhat is the resolution of a printer?Sharpness and clarityMeasured by number of dots per inch (dpi) printercan output25
  26. 26. PrintersPrintersPrintersPrintersHow does an ink-jet printer work?print head26Step 1. A smallresistor heats theink, causing theink to boil andform a vaporbubble.Step 2. Thevapor bubbleforces the inkthrough thenozzle.Step 3. Inkdrops onto thepaper.Step 4. As the vapor bubblecollapses, fresh ink is drawn intothe firing chamber.print cartridgefiringchambernozzlebubble resistor inkink dot
  27. 27. PrintersPrintersPrintersPrintersWhat is a photo printer?Color printer that producesphoto-lab-quality picturesMany photo printers have abuilt-in card slotPictBridge is a standard27PictBridge is a standardtechnology that allows you toprint pictures directly from adigital camera
  28. 28. PrintersPrintersPrintersPrintersWhat is a laser printer?High-speed, high-qualitynonimpact printerPrints text and graphics inhigh-quality resolution,ranging from 1,200 to 2,400 dpi28ranging from 1,200 to 2,400 dpiTypically costs more thanink-jet printer, but is muchfaster
  29. 29. PrintersPrintersPrintersPrintersHow does a laser printer work?29
  30. 30. PrintersPrintersPrintersPrintersWhat is a thermal printer?Generates images by pushing electrically heated pinsagainst heat-sensitive paperDye-sublimation printer (also called a digital photo printer)uses heat to transfer dye to specially coated paper30
  31. 31. PrintersPrintersPrintersPrintersWhat is a mobile printer?Small, lightweight, battery-powered printer that allowsmobile user to print from notebook computer, TabletPC, PDA, or smart phone while traveling31
  32. 32. PrintersPrintersPrintersPrintersWhat are label printers and postage printers?Small printer that prints on adhesive-type materialPostage printer has built-in digital scale and printspostage stampsMost also print bar codes32
  33. 33. PrintersPrintersPrintersPrintersWhat is a plotter?Sophisticated printer used to produce high-qualitydrawingsLarge-format printer creates photo-realistic-qualitycolor prints33
  34. 34. PrintersPrintersPrintersPrintersWhat is a dot-matrix printer?Impact printer that produces printed imageswhen tiny wire pins strike ribbonImpact printer formscharacters by strikingmechanism against inked34mechanism against inkedribbon that contacts paper
  35. 35. PrintersPrintersPrintersPrintersWhat is a line printer?High-speed impact printerthat prints entire lineat a timeSpeed measured in linesper minute (lpm)35Band printer prints fullyformed characters using ahammer mechanismShuttle-matrix printer ishigh-speed printer thatworks like dot-matrixprinter
  36. 36. Speakers, Headphones, and HeadsetsSpeakers, Headphones, and HeadsetsSpeakers, Headphones, and HeadsetsSpeakers, Headphones, and HeadsetsWhat is an audio output device?Computer component that produces music, speech, orother soundsSpeakers and headsets are common devices36
  37. 37. Speakers, Headphones, and HeadsetsSpeakers, Headphones, and HeadsetsSpeakers, Headphones, and HeadsetsSpeakers, Headphones, and HeadsetsWhat is voice output?Computer talks to you through speakers on computerInternet telephony allows you to have conversationover Web37
  38. 38. Other Output DevicesOther Output DevicesOther Output DevicesOther Output DevicesWhat is a facsimile (fax) machine?Device that transmits and receives documents overtelephone lines38
  39. 39. Other Output DevicesOther Output DevicesOther Output DevicesOther Output DevicesWhat is a fax modem?Modem that allows you to send and receive electronicdocuments as faxesexternal faxmodeminternal fax cardin system unit39fax machine
  40. 40. Other Output DevicesOther Output DevicesOther Output DevicesOther Output DevicesWhat is a multifunction peripheral?Provides functionalityof printer, scanner,copy machine, andfax machine40
  41. 41. Other Output DevicesOther Output DevicesOther Output DevicesOther Output DevicesWhat is a data projector?Device that takes textand images fromcomputer screen andprojects them ontolarger screen41larger screen
  42. 42. Other Output DevicesOther Output DevicesOther Output DevicesOther Output DevicesWhat is force feedback?Sends resistance to device in response to actions of user42
  43. 43. Putting It All TogetherPutting It All TogetherPutting It All TogetherPutting It All TogetherWhat are suggested output devices for the home user?Monitor Printer Other17- or 19-inchLCD monitorInk-jet colorprinter; orPhoto printerSpeakersHeadsetForce-feedbackUser43Photo printer Force-feedbackjoystick, wheel,and/or gamepad
  44. 44. Putting It All TogetherPutting It All TogetherPutting It All TogetherPutting It All TogetherWhat are suggested output devices for the small office/homeoffice user?19- or 21-inchLCD monitorColor LCDMultifunctionperipheral; orInk-jet colorFax machineSpeakersMonitor Printer OtherUser44Color LCDscreen on TabletPC, PDA, orsmart phoneInk-jet colorprinter; orLaser printer(black-and-white or color)Label printerPostage printer
  45. 45. Putting It All TogetherPutting It All TogetherPutting It All TogetherPutting It All TogetherWhat are suggested output devices for the mobile user?17-inch colorLCD screen onnotebookMobile colorprinterInk-jet colorFax modemHeadphones orearphonesMonitor Printer OtherUser45notebookcomputerLCD screen onTablet PC, PDA,or smart phoneInk-jet colorprinter; orLaser printer forin-office use(black-and-white or color)Photo printerearphonesDLP dataprojector
  46. 46. Putting It All TogetherPutting It All TogetherPutting It All TogetherPutting It All TogetherWhat are suggested output devices for the power user?23-inch LCDmonitorLaser printer(black-and-white or color)Fax machine orfax modemSpeakersMonitor Printer OtherUser46white or color)Plotter or large-format printer;orPhoto printer; orDye-sublimationprinterSpeakersHeadphones orearphones
  47. 47. Putting It All TogetherPutting It All TogetherPutting It All TogetherPutting It All TogetherWhat are suggested output devices for the large business user?High-speed laserprinterLaser printer,Fax machine orfax modemSpeakersMonitor Printer Other19- or 21-inchLCD monitorLCD screen onUser47Laser printer,colorLine printer (forlarge reportsfrom amainframe)Label printerSpeakersHeadphones orearphonesDLP dataprojectorLCD screen onTablet PC, PDA,or smart phone
  48. 48. Output Devices for Physically Challenged UsersOutput Devices for Physically Challenged UsersOutput Devices for Physically Challenged UsersOutput Devices for Physically Challenged UsersWhat is the Magnifier?Windows Magnifierenlarges text andother items onscreen48
  49. 49. Output Devices for Physically Challenged UsersOutput Devices for Physically Challenged UsersOutput Devices for Physically Challenged UsersOutput Devices for Physically Challenged UsersWhat other output options are available for visuallyimpaired users?Change Window settings,such as increasing size orchanging color of text tomake words easier to read49make words easier to readBlind users can work withWindows Vista’s NarratorBraille printer outputsinformation in Brailleonto paper
  50. 50. Fax machines and fax modemsFax machines and fax modemsSummary ofSummary ofSummary ofSummary of OutputOutputOutputOutputFlat-panel displaysFlat-panel displaysCRT monitorsCRT monitors Multifunction peripheralsMultifunction peripherals50PrintersPrintersSpeakers, headphones, and earphonesSpeakers, headphones, and earphonesData projectorsData projectorsForce feedback joysticks, wheels,and gamepadsForce feedback joysticks, wheels,and gamepadsChapter 4 Complete

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