Computer Confluence 6/eSlide 2Computer Confluence 6/e Chapter 3 ObjectivesComputer Confluence 6/e Chapter 3 Input: From Person to ProcessorSlide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14© 2005 Prentice-Hall, Inc. Slide 1Computer Confluence 6/e© 2005 Prentice-Hall, Inc. Slide 2Computer Confluence 6/eChapter 3Hardware Basics: Peripherals© 2005 Prentice-Hall, Inc. Slide 3Computer Confluence 6/e Chapter 3ObjectivesInput devices and their roles in getting different types of information into the computerOutput devices and the ways they make computers more useful The functionality of different types of storage devices The ways the components of a computer system fit together© 2005 Prentice-Hall, Inc. Slide 4Computer Confluence 6/e Chapter 3Input: From Person to ProcessorKeyboardThe most familiar input deviceUsed to enter letters, numbers and special characters© 2005 Prentice-Hall, Inc. Slide 5Computer Confluence 6/e Chapter 3Input: From Person to ProcessorStandard keyboard Ergonomic keyboardsTo address possible medical problems Wireless keyboardFolding keyboards Used with palm-sized computersOne-handed keyboards Keyboards printed on membranes© 2005 Prentice-Hall, Inc. Slide 6Computer Confluence 6/e Chapter 3Input: From Person to ProcessorPointing Devices Mouse Touchpad Pointing stick Trackball Joystick Graphics tablet Touch screenStylus© 2005 Prentice-Hall, Inc. Slide 7Computer Confluence 6/e Chapter 3Input: From Person to ProcessorReading ToolsReads marks representing codes specifically designed for computer input© 2005 Prentice-Hall, Inc. Slide 8Computer Confluence 6/e Chapter 3Input: From Person to ProcessorOptical-mark readers Magnetic-ink character readers Bar-code readers Pen scanners Tablet PC Smart whiteboard© 2005 Prentice-Hall, Inc. Slide 9Computer Confluence 6/e Chapter 3Input: From Person to ProcessorDigitizing the Real WorldScanners capture and digitize printed imagesFlatbed Slide Drum Sheet-fed© 2005 Prentice-Hall, Inc. Slide 10Computer Confluence 6/e Chapter 3Input: From Person to ProcessorDigital cameraSnapshots captured as digital imagesDigital images stored as bit patterns on disks or other digital storage media© 2005 Prentice-Hall, Inc. Slide 11Computer Confluence 6/e Chapter 3Input: From Person to ProcessorVideo digitizerCapture input from a:Video cameraVideo cassette recorder or televisionConvert it to a digital signalStored in memory and displayed on computer screens VideoconferencingPeople in diverse locations can see and hear each other Used to conduct long-distance meetingsVideo images transmitted through networks© 2005 Prentice-Hall, Inc. Slide 12Computer Confluence 6/e Chapter 3Input: From Person to ProcessorAudio digitizers Digitize sounds from  Microphones Other input devicesDigital signals can be  Stored Further processed with specialized software© 2005 Prentice-Hall, Inc. Slide 13Computer Confluence 6/e Chapter 3Input: From Person to ProcessorSpeech recognition software Converts voice data into words that can be edited and printed© 2005 Prentice-Hall, Inc. Slide 14Computer Confluence 6/e Chapter 3Input: From Person to ProcessorSensors Designed to monitor physical conditions Temperature, humidity, pressure Provide data used in: Robotics Environmental climate control Weather forecasting Medical monitoring Biofeedback Scientific