Discovering Computers 2009 Chapter 5 Input Chapter 5 Objectives Define Defineinput input Explain Explainhow howaadigital digitalcamera cameraworks works List Listthe thecharacteristics characteristicsof ofaakeyboard keyboard Describe Describeuses usesof ofWeb Webcams cams and andvideo videoconferencing conferencing Describe Describedifferent differentmouse mousetypes types and andhow howthey theywork work Discuss Discussvarious variousscanners scannersand andreading reading devices devicesand andhow howthey theywork work Summarize Summarizehow howvarious variouspointing pointing devices devicesand andcontrollers controllersfor forgaming gamingand and media mediaplayers playerswork work Explain Explainthe thetypes typesof ofterminals terminals Explain Explainhow howvoice voicerecognition recognitionworks works Describe Describevarious variousinput inputdevices devices for forsmart smartphones phones PDAs PDAs and andTablet TabletPCs PCs Summarize Summarizethe thevarious variousbiometric biometric devices devices Identify Identifyalternative alternativeinput inputdevices devicesfor for physically physicallychallenged challengedusers users Next What Is Input What is input Data or instructions entered into memory of computer Input device is any hardware component that allows users to enter data and instructions p 234 236 Fig 5 1 Next What Is Input What are the two types of input Data Unprocessed text numbers images audio and video Instructions p 234 Programs Commands User responses Next The Keyboard How is the keyboard divided Typing area Numeric keypad Function keys special keys that issue commands p 236 Fig 5 2 Next The Keyboard What is the insertion point Blinking vertical bar that indicates where the next character you type will be displayed p 237 Fig 5 3 Next The Keyboard How are keyboards attached Desktop computer keyboards often attach via a cable Wireless keyboards communicate with a receiver attached to a port on the system unit Keyboards often are built into mobile devices p 238 Fig 5 4 Next Pointing Devices What is a mouse Pointing device that fits under palm of hand Pointing device controls movement of pointer Mechanical mouse Optical mouse Laser mouse Air mouse Wireless mouse Click to view Web Link click Chapter 5 Click Web Link from left navigation then click Air Mouse below Chapter 5 p 239 Fig 5 5 and 5 6 Next Pointing Devices What are common mouse operations Point Point p 240 Fig 5 7 Click Click RightRightclick click Drag Drag RightRightdrag drag Rotate Rotate wheel wheel FreeFreespin spin wheel wheel DoubleDoubleclick click Press Press wheel wheel button button TripleTripleclick click Tilt Tilt wheel wheel Next Other Pointing Devices What is a trackball Stationary pointing device with a ball on its top or side To move pointer rotate ball with thumb fingers or palm of hand Click to view Web Link click Chapter 5 Click Web Link from left navigation then click Repetitive Strain Injuries below Chapter 5 p 241 Fig 5 8 Next Other Pointing Devices What are a touchpad and a pointing stick Touchpad is small flat rectangular pointing device sensitive to pressure and motion Pointing stick is pointing device shaped like pencil eraser positioned between keys on keyboard p 241 242 Figs 5 9 5 10 Next Other Pointing Devices What is a light pen Handheld input device that can detect light p 242 Press light pen against screen surface and then press button on pen Next Other Pointing Devices What is a touch screen Touch areas of screen with finger Often used with kiosks Microsoft Surface is a 30inch tabletop display that allows one or more people to interact with the screen using their fingers or hands Click to view Web Link click Chapter 5 Click Web Link from left navigation then click Microsoft Surface below Chapter 5 p 242 Fig 5 12 and 5 13 Next Keyboard and Pointing Devices What is a digital pen Looks like a ballpoint pen but uses pressure to write text and draw lines Used with graphics tablets flat electronic boards Click to view Web Link click Chapter 5 Click Web Link from left navigation then click Graphics Tablets below Chapter 5 p 243 Fig 5 14 Next Controllers for Gaming and Media Players What are the types of game controllers Gamepads Joysticks and Wheels Light gun Dance pad Motion sensing game controller Click to view Web Link click Chapter 5 Click Web Link from left navigation then click Wii Remote below Chapter 5 p 244 245 Fig 5 15 Next Controllers for Gaming and Media Players What is a touch sensitive pad Input device on a portable media player that enables users to scroll through and play music view pictures watch videos or movies adjust volume and customize settings Click Wheel p 245 Fig 5 16 Next Voice Input What is voice input The process of entering input by speaking into a microphone Voice recognition is the computer s capability of distinguishing spoken words Click to view Web Link click Chapter 5 Click Web Link from left navigation then click Voice Input below Chapter 5 p 245 246 Fig 5 17 Next Voice Input What is a MIDI musical instrument digital interface External device such as electronic piano keyboard to input music and sound effects p 246 Fig 5 18 Next Input for Smart Phones PDAs and Tablet PCs How is data entered into a smart phone Talk directly into the microphone or by using digital cameras and touch sensitive pads p 247 Fig 5 19 Next Input for Smart Phones PDAs and Tablet PCs What is a portable keyboard A portable keyboard is a full sized keyboard that communicates with the phone p 248 Fig 5 20 Next Input for Smart Phones PDAs and Tablet PCs What is a smart phone Users can input and send text messages graphics pictures video clips and sound files Many have a built in or attachable camera p 248 249 Fig 5 21 Next Input for Smart Phones PDAs and Tablet PCs What is a Tablet PC Mobile computer that includes handwriting recognition software Primary input device is a pressure sensitive digital pen p 249 250 Fig 5 23 Next Digital Cameras What is a digital camera Allows you to take digital pictures Images viewable immediately on camera Download to computer Post pictures to Web p 250 251 Fig 5 24 Next Digital Cameras How does a digital camera work p 251 Fig 5 25 Next Digital Cameras What is resolution Sharpness and clarity of image The higher the resolution the better the image quality but the more expensive the camera Pixel picture element is single point in electronic image p 252 Fig 5 26 Greater the number of pixels the better the image quality Next Video Input