1. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Chapter 03: Input and Output

2. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-2 Competencies (Page 1 of 2) Define inputDefine input Describe keyboard entry including the different types of keyboards and keyboard featuresDescribe keyboard entry including the different types of keyboards and keyboard features Discuss pointing devices including mice, touch screens, joysticks, and stylusesDiscuss pointing devices including mice, touch screens, joysticks, and styluses Describe scanning devices including optical scanners and card readersDescribe scanning devices including optical scanners and card readers Discuss image capturing devices including digital cameras and digital video camerasDiscuss image capturing devices including digital cameras and digital video cameras

3. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-3 Competencies (Page 2 of 2) Define outputDefine output Discuss monitors features, flat-panel, CRT, e-book readers, data projectors, and HDTVsDiscuss monitors features, flat-panel, CRT, e-book readers, data projectors, and HDTVs Define printing features as well as ink-jet, laser, dot-matrix, thermal, plotter, photo, and portable printersDefine printing features as well as ink-jet, laser, dot-matrix, thermal, plotter, photo, and portable printers Discuss audio-output devicesDiscuss audio-output devices Define combination input and output devicesDefine combination input and output devices

4. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-4 Introduction Have you ever wondered how information gets into your computer or comes out in a form you can use?Have you ever wondered how information gets into your computer or comes out in a form you can use? –Input devices convert what we understand into what the system unit can process –Output devices convert what the system unit has processed into a form that we can understand

5. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-5 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 the system unit can processInput devices translate data into a form that the system unit can process Some hardware input devices include:Some hardware input devices include: –Keyboards –Pointing devices –Scanning devices –Other devices

6. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-6 Keyboard Entry (Page 1 of 2) KeyboardsKeyboards –Traditional keyboards –Ergonomic keyboards –Wireless keyboards –PDA keyboards –Virtual keyboards FeaturesFeatures –Typewriter keyboard with numeric keypad –Special purpose keys ToggleToggle Combination KeysCombination Keys

7. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-7 Keyboard Entry (Page 2 of 2) Traditional Keyboard

8. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-8 Pointing Devices (Page 1 of 2) MiceMice –Mechanical –Optical –Cordless or wireless Three similar devices to miceThree similar devices to mice –Trackball –Touch pads –Pointing stick

9. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-9 Pointing Devices (Page 2 of 2) JoystickJoystick Touch ScreenTouch Screen –Multi-touch screen StylusStylus

10. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-10 Scanning Devices (Page 1 of 2) Optical scannersOptical scanners –Flatbed scanners –Document scanners –Portable scanners Card ReadersCard Readers –Magnetic card readers –Radio Frequency card readers

11. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-11 Scanning Devices (Page 2 of 2) Bar code readersBar code readers –Handheld wand readers or platform scanners –Contain photoelectric cells that read bar codes Character and mark recognition devicesCharacter and mark recognition devices –Magnetic ink character recognition (MICR) –Optical-character recognition (OCR) –Optical-mark recognition (OMR)

12. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-12 Image Capturing Devices Digital camerasDigital cameras –Images recorded digitally on a disk –Images can be downloaded to a computer Digital video camerasDigital video cameras –Records motion digitally –Can take still images as well –WebCams Specialized digital video camerasSpecialized digital video cameras Broadcast images over the InternetBroadcast images over the Internet

13. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-13 Instant 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. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-14 Audio-Input Devices Voice recognition systemsVoice recognition systems –Use a microphone, a sound card, and special software –Users can operate computers and create documents using voice commands

15. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-15 What is Output? Processed data or informationProcessed data or information Types of outputTypes of output –Text –Graphics/Photos –Audio & video Output devicesOutput devices –Monitors –Printers –Other Devices

16. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-16 Monitors (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 –Resolution/pixels –Dot pitch –Refresh rate –Size

17. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-17 Monitors (Page 2 of 2) Cathode-ray tube (CRT) monitorsCathode-ray tube (CRT) monitors Flat-panel monitorsFlat-panel monitors –Require less power to operate –Portable and thinner than CRTs Other monitorsOther monitors –E-books readers –Data projectors –High-definition television (HDTV)

18. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-18 Printers (Page 1 of 2) Translates information that has been processed by the system unitTranslates information that has been processed by the system unit Output referred to as hard copyOutput referred to as hard copy FeaturesFeatures –Resolution –Color capability –Speed –Memory –Duplex printing

19. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-19 Printers (Page 2 of 2) Ink-jet printerInk-jet printer Laser printerLaser printer –Personal laser printers –Shared laser printers Thermal printerThermal printer Other printersOther printers –Dot-matrix printers –Plotters –Photo printers –Portable printers

20. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-20 Audio-Output Devices Translates audio information from the computer into sounds that people can understandTranslates audio information from the computer into sounds that people can understand Common devicesCommon devices –Speakers –Headphones Digital Music PlayerDigital Music Player –iPod –iRiver

21. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-21 Combination Input and Output Devices Fax machinesFax machines Multifunctional Devices (MFD)Multifunctional Devices (MFD) Internet telephonesInternet telephones –Known as Internet telephony –IP telephony –Voice-over IP (VoIP)

22. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-22 Internet Telephone Approaches Computer-to computerComputer-to computer –Free long distance calls –Requires computers to be connected to the Internet –MSN is most widely used software Computer-to traditional telephoneComputer-to traditional telephone –Place the call from a computer to a phone –Requires 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 computer –Subscription 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. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-23 Careers In IT Technical writers prepare instruction manuals, technical reports, and other scientific or technical documentsTechnical writers prepare instruction manuals, technical reports, and other scientific or technical documents Typically requires a college degreeTypically requires a college degree –Communications –Journalism –English –Specialization or familiarization with a technical field Technical writers can expect to earn $46,500 to $76,500 annually.Technical writers can expect to earn $46,500 to $76,500 annually.

24. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-24 A Look to the Future Electronic Translators May Be in Your Future Electronic Interpretation may soon exist to provide personal interpretation for foreign languages and imagesElectronic Interpretation may soon exist to provide personal interpretation for foreign languages and images Prototype portable handheld electronic interpreters are currently in a testing phase at the U.S. Office of Naval ResearchPrototype portable handheld electronic interpreters are currently in a testing phase at the U.S. Office of Naval Research