O leary2012 comp_ppt_ch07

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O leary2012 comp_ppt_ch07

  1. 1. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill Chapter 07: Input and OutputChapter 07: Input and OutputChapter 07: Input and OutputChapter 07: Input and Output
  2. 2. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-2McGraw-Hill CompetenciesCompetencies (Page 1 of 2)(Page 1 of 2) • Define inputDefine input • Describe keyboard entry including the differentDescribe keyboard entry including the different types of keyboards andtypes of keyboards and keyboardkeyboard featuresfeatures • Discuss pointing devices including mice,Discuss pointing devices including mice, touchtouch screensscreens,, joysticksjoysticks, and, and stylusstyluseses • Describe scanning devices includingDescribe scanning devices including opticaloptical scannersscanners andand card readerscard readers • Discuss image capturing devices includingDiscuss image capturing devices including digitaldigital camerascameras andand digital video camerasdigital video cameras
  3. 3. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-3McGraw-Hill CompetenciesCompetencies (Page 2 of 2)(Page 2 of 2) • Define outputDefine output • DiscussDiscuss monitorsmonitors features,features, flat-panelflat-panel,, CRTCRT,, e-booke-book readersreaders,, data projectorsdata projectors, and, and HDTVHDTVss • Define printing features as well asDefine printing features as well as ink-jetink-jet,, laserlaser,, dot-matrixdot-matrix,, thermalthermal,, plotterplotter,, photophoto, and, and portableportable printersprinters • Discuss audio-output devicesDiscuss audio-output devices • Define combination input and output devicesDefine combination input and output devices
  4. 4. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-4McGraw-Hill IntroductionIntroduction • Have you ever wondered howHave you ever wondered how information gets into yourinformation gets into your computer or comes out in acomputer or comes out in a form you can use?form you can use? – Input devices convert what weInput devices convert what we understand into what the systemunderstand into what the system unit can processunit can process – Output devices convert what theOutput devices convert what the system unit has processed into asystem unit has processed into a form that we can understandform that we can understand
  5. 5. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-5McGraw-Hill What is Input?What is Input? • Any data or instructions used by a computerAny data or instructions used by a computer • Input devices translate data into a form that theInput devices translate data into a form that the system unit can processsystem unit can process • Some hardware input devices include:Some hardware input devices include: – KeyboardsKeyboards – Pointing devicesPointing devices – Scanning devicesScanning devices – Other devicesOther devices
  6. 6. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-6McGraw-Hill Keyboard EntryKeyboard Entry (Page 1 of 2)(Page 1 of 2) • KeyboardsKeyboards – Traditional keyboardsTraditional keyboards – Ergonomic keyboardsErgonomic keyboards – Wireless keyboardsWireless keyboards – PDA keyboardsPDA keyboards – Virtual keyboardsVirtual keyboards • FeaturesFeatures – Typewriter keyboard with numericTypewriter keyboard with numeric keypadkeypad – Special purpose keysSpecial purpose keys • ToggleToggle • Combination KeysCombination Keys
  7. 7. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-7McGraw-Hill Keyboard EntryKeyboard Entry (Page 2 of 2)(Page 2 of 2) Traditional KeyboardTraditional Keyboard
  8. 8. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-8McGraw-Hill Pointing DevicesPointing Devices (Page 1 of 2)(Page 1 of 2) • MiceMice – MechanicalMechanical – OpticalOptical – Cordless or wirelessCordless or wireless • Three similar devices to miceThree similar devices to mice – TrackballTrackball – Touch padsTouch pads – Pointing stickPointing stick
  9. 9. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-9McGraw-Hill Pointing DevicesPointing Devices (Page 2 of 2)(Page 2 of 2) • JoystickJoystick • Touch ScreenTouch Screen – Multi-touch screenMulti-touch screen • StylusStylus
  10. 10. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-10McGraw-Hill Scanning DevicesScanning Devices (Page 1 of 2)(Page 1 of 2) • Optical scannersOptical scanners – Flatbed scannersFlatbed scanners – Document scannersDocument scanners – Portable scannersPortable scanners • Card ReadersCard Readers – Magnetic card readersMagnetic card readers – Radio FrequencyRadio Frequency card readerscard readers
  11. 11. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-11McGraw-Hill Scanning DevicesScanning Devices (Page 2 of 2)(Page 2 of 2) • Bar code readersBar code readers – HandheldHandheld wand readerswand readers or platform scannersor platform scanners – Contain photoelectric cellsContain photoelectric cells that readthat read bar codesbar codes • Character and markCharacter and mark recognition devicesrecognition devices – Magnetic ink character recognitionMagnetic ink character recognition (MICR)(MICR) – Optical-character recognition (OCR)Optical-character recognition (OCR) – Optical-mark recognition (OMR)Optical-mark recognition (OMR)
  12. 12. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-12McGraw-Hill Image Capturing DevicesImage Capturing Devices • Digital camerasDigital cameras – Images recorded digitally on a diskImages recorded digitally on a disk – Images can be downloaded to a computerImages can be downloaded to a computer • Digital video camerasDigital video cameras – Records motion digitallyRecords motion digitally – Can take still images as wellCan take still images as well – WebCamsWebCams • Specialized digitalSpecialized digital video camerasvideo cameras • Broadcast imagesBroadcast images over the Internetover the Internet
  13. 13. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-13McGraw-Hill Instant Messaging and WebCamsInstant Messaging and WebCams • Exchange messages and files with friendsExchange messages and files with friends • Voice and video capabilitiesVoice and video capabilities • Application sharingApplication sharing
  14. 14. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-14McGraw-Hill Audio-Input DevicesAudio-Input Devices • Voice recognition systemsVoice recognition systems – Use a microphone, a sound card,Use a microphone, a sound card, and special softwareand special software – Users can operateUsers can operate computers and createcomputers and create documents usingdocuments using voice commandsvoice commands
  15. 15. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-15McGraw-Hill What is Output?What is Output? • Processed data or informationProcessed data or information • Types of outputTypes of output – TextText – Graphics/PhotosGraphics/Photos – Audio & videoAudio & video • Output devicesOutput devices – MonitorsMonitors – PrintersPrinters – Other DevicesOther Devices
  16. 16. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-16McGraw-Hill MonitorsMonitors (Page 1 of 2)(Page 1 of 2) • Known as screens or display screensKnown as screens or display screens • Output referred to as soft copyOutput referred to as soft copy • FeaturesFeatures – ResolutionResolution//pixelspixels – Dot pitchDot pitch – Refresh rateRefresh rate – SizeSize
  17. 17. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-17McGraw-Hill MonitorsMonitors (Page 2 of 2)(Page 2 of 2) • Cathode-ray tube (CRT) monitorsCathode-ray tube (CRT) monitors • Flat-panel monitorsFlat-panel monitors – Require less power to operateRequire less power to operate – Portable and thinner than CRTsPortable and thinner than CRTs • Other monitorsOther monitors – E-books readersE-books readers – Data projectorsData projectors – High-definitionHigh-definition television (HDTV)television (HDTV)
  18. 18. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-18McGraw-Hill PrintersPrinters (Page 1 of 2)(Page 1 of 2) • Translates information that has been processedTranslates information that has been processed by the system unitby the system unit • Output referred to as hard copyOutput referred to as hard copy • FeaturesFeatures – ResolutionResolution – Color capabilityColor capability – SpeedSpeed – MemoryMemory – Duplex printingDuplex printing
  19. 19. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-19McGraw-Hill PrintersPrinters (Page 2 of 2)(Page 2 of 2) • Ink-jet printerInk-jet printer • Laser printerLaser printer – Personal laser printersPersonal laser printers – Shared laser printersShared laser printers • Thermal printerThermal printer • Other printersOther printers – Dot-matrix printersDot-matrix printers – PlottersPlotters – Photo printersPhoto printers – Portable printersPortable printers
  20. 20. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-20McGraw-Hill Audio-Output DevicesAudio-Output Devices • Translates audio information from the computerTranslates audio information from the computer into sounds that people can understandinto sounds that people can understand • Common devicesCommon devices – SpeakersSpeakers – HeadphonesHeadphones • Digital Music PlayerDigital Music Player – iPodiPod – iRiveriRiver
  21. 21. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-21McGraw-Hill Combination Input and Output DevicesCombination Input and Output Devices • Fax machinesFax machines • Multifunctional Devices (MFD)Multifunctional Devices (MFD) • Internet telephonesInternet telephones – Known asKnown as Internet telephonyInternet telephony – IP telephonyIP telephony – Voice-over IP (VoIP)Voice-over IP (VoIP)
  22. 22. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-22McGraw-Hill Internet Telephone ApproachesInternet Telephone Approaches • Computer-to computerComputer-to computer – Free long distance callsFree long distance calls – Requires computers to be connected to the InternetRequires computers to be connected to the Internet – MSN is most widely used softwareMSN is most widely used software • Computer-to traditional telephoneComputer-to traditional telephone – Place the call from a computer to a phonePlace the call from a computer to a phone – Requires an Internet phone service providerRequires an Internet phone service provider • Software requirementsSoftware requirements • Small monthly and/or per-minute feeSmall monthly and/or per-minute fee • Traditional telephone-to-traditional telephoneTraditional telephone-to-traditional telephone – Does not require a computerDoes not require a computer – Subscription required to a special Internet phone service providerSubscription required to a special Internet phone service provider • Special hardware adapterSpecial hardware adapter • Cost is similar to the computer-to-traditional telephone approachCost is similar to the computer-to-traditional telephone approach
  23. 23. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-23McGraw-Hill Careers In ITCareers In IT • Technical writersTechnical writers prepare instruction manuals,prepare instruction manuals, technical reports, and other scientific or technicaltechnical reports, and other scientific or technical documentsdocuments • Typically requires a college degreeTypically requires a college degree – CommunicationsCommunications – JournalismJournalism – EnglishEnglish – Specialization or familiarizationSpecialization or familiarization with a technical fieldwith a technical field • Technical writers can expect toTechnical writers can expect to earn $46,500 to $76,500 annually.earn $46,500 to $76,500 annually.
  24. 24. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-24McGraw-Hill A Look to the FutureA Look to the Future Electronic Translators May Be in Your FutureElectronic Translators May Be in Your Future • Electronic Interpretation may soon exist toElectronic Interpretation may soon exist to provide personal interpretation for foreignprovide personal interpretation for foreign languages and imageslanguages and images • Prototype portable handheld electronicPrototype portable handheld electronic interpreters are currently ininterpreters are currently in a testing phase at the U.S.a testing phase at the U.S. Office of Naval ResearchOffice of Naval Research
  25. 25. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-25McGraw-Hill Open-Ended Questions (Page 1 of 2)Open-Ended Questions (Page 1 of 2) • Define input devices.Define input devices. • Describe the different types of keyboard,Describe the different types of keyboard, pointing, scanning, image capturing, andpointing, scanning, image capturing, and audio-input devices.audio-input devices. • Describe the three categories of outputDescribe the three categories of output devices.devices.
  26. 26. Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. ComputingEssentials2012:ComputingEssentials2012:MakingITWorkforYouMakingITWorkforYou 7-26McGraw-Hill Open-Ended Questions (Page 2 of 2)Open-Ended Questions (Page 2 of 2) • Define output devices.Define output devices. • What are combination input and outputWhat are combination input and output devices? Give examples of such devices.devices? Give examples of such devices.

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