Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Chapter 07: Input and Output

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-2 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-3 McGraw-Hill 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 Somce hardware input devices include:Somce hardware input devices include: –Keyboards –Pointing devices –Scanning devices –Other devices

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-4 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-5 McGraw-Hill Keyboard Entry (Page 2 of 2) Traditional Keyboard

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-6 McGraw-Hill 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

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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-8 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-9 McGraw-Hill 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)

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-10 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-11 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-12 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-13 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-14 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-15 McGraw-Hill 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)

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-16 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-17 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-18 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-19 McGraw-Hill 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)

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-20 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-21 McGraw-Hill 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.

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-22 McGraw-Hill 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

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-23 McGraw-Hill Open-Ended Questions (Page 1 of 2) Define input devices.Define input devices. Describe the different types of keyboard, pointing, scanning, image capturing, and audio-input devices.Describe the different types of keyboard, pointing, scanning, image capturing, and audio-input devices. Describe the three categories of output devices.Describe the three categories of output devices.

Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 7-24 McGraw-Hill Open-Ended Questions (Page 2 of 2) Define output devices.Define output devices. What are combination input and output devices? Give examples of such devices.What are combination input and output devices? Give examples of such devices.