Living in a Digital WorldDiscovering Computers 2011Objectives OverviewDefine input and differentiate among a program, command, and user responseIdentify the keys and buttons commonly found on desktop computer keyboards, and describe how keyboards for mobile computers and devices differ from desktop computer keyboardsDescribe different mouse types and explain how to use a mouseDescribe various types of touch screens and explain how a touch-sensitive pad worksDescribe various types of pen input, and identify other types of input for smart phonesSummarize the purpose of various game controllersDiscovering Computers 2011: Living in a Digital World Chapter 52See Page 257 for Detailed ObjectivesObjectives OverviewExplain how resolution affects the quality of a picture captured on a digital cameraDescribe the uses of voice recognition, Web cams, and video conferencingDiscuss how various scanners and reading devices workSummarize the various biometric devicesDiscuss how POS terminals, automated teller machines, and DVD kiosks workIdentify alternative input devices for physically challenged usersDiscovering Computers 2011: Living in a Digital World Chapter 53See Page 257 for Detailed ObjectivesWhat Is Input?• Input is any data and instructions entered into the memory of a computerDiscovering Computers 2011: Living in a Digital World Chapter 54Pages 258 – 259 Figure 5-1What Is Input?Discovering Computers 2011: Living in a Digital World Chapter 55Pages 258 - 259• Instructions can be entered into the computer in the form of programs, commands, and user responsesA program is a series of related instructions that tells a computer what tasks to perform and how to perform themPrograms respond to commands that a user issuesA user response is an instruction a user issues by replying to a question displayed by a programWhat Are Input DevicesAn input device is any hardware component that allows users to enter data and instructions into a computerDiscovering Computers 2011: Living in a Digital World Chapter 56Page 260The Keyboard• A keyboard is an input device that contains keys users press to enter data and instructions into a computerDiscovering Computers 2011: Living in a Digital World Chapter 57Page 260 Figure 5-2The KeyboardDiscovering Computers 2011: Living in a Digital World Chapter 58Pages 260 - 261• Most desktop computer keyboards have…The Keyboard• The insertion point, also known as the cursor, is a symbol on the screen that indicates where the next character you type will appearDiscovering Computers 2011: Living in a Digital World Chapter 59Page 261 Figure 5-3The KeyboardUSB portWired KeyboardsBluetoothIrDAWireless KeyboardsDiscovering Computers 2011: Living in a Digital World Chapter 510Page 262The Keyboard• An ergonomic keyboard has a design that reduces the chance of wrist and hand injuries• Ergonomics incorporates comfort, efficiency, and safety into the design of the workplaceDiscovering Computers 2011: Living in a Digital World Chapter 511Page 262 Figure 5-4Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Ergonomics below Chapter 5The Keyboard• Keyboards on mobile devices typically are smaller and/or have fewer keys• Some phones have predictive text input, which saves time when entering text using the phone’s keypadDiscovering Computers 2011: Living in a Digital World Chapter 512Pages 262 – 263 Figure 5-5Pointing DevicesDiscovering Computers 2011: Living in a Digital World Chapter 513Page 263Mouse• A mouse is a pointing device that fits under the palm of your hand comfortably– Most widely used pointing device on desktop computers• A mouse can be wired or wirelessDiscovering Computers 2011: Living in a Digital World Chapter 514Pages 263 – 264 Figures 5-6 and 5-7Mouse• Mouse operationsDiscovering Computers 2011: Living in a Digital World Chapter 515Page 264Figure 5-8Point Click Right-click Double-clickTriple-click Drag Right-dragRotate wheelFree-spin wheelPress wheel Tilt wheelPress thumb buttonOther Pointing DevicesTrackball• A trackball is a stationary pointing device with a ball on its top or sideTouchpad• A touchpad is a small, flat, rectangular pointing device that is sensitive to pressure and motionPointing Stick• A pointing stick is a pressure-sensitive pointing device shaped like a pencil eraser that is positioned between keys on a keyboardDiscovering Computers 2011: Living in a Digital World Chapter 516Pages 265 – 266 Figures 5-9 – 5-11Touch Screens and Touch-Sensitive Pads• A touch screen is a touch-sensitive display deviceDiscovering Computers 2011: Living in a Digital World Chapter 517Page 266 Figures 5-12 – 5-13Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Multi-Touch Screensbelow Chapter 5Touch Screens and Touch-Sensitive PadsMicrosoft Surface Touch-sensitive padsDiscovering Computers 2011: Living in a Digital World Chapter 518Page 267 Figures 5-14 – 5-15Pen Input• With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selectionsDiscovering Computers 2011: Living in a Digital World Chapter 519Page 268 Figure 5-16Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Signature Capture Pads below Chapter 5Other Input for Smart PhonesDiscovering Computers 2011: Living in a Digital World Chapter 520Page 269 Figures 5-17 – 5-18Game Controllers• Video games and computer games use a game controlleras the input device that directs movements and actions of on-screen objectsDiscovering Computers 2011: Living in a Digital World Chapter 521Pages 270 - 271GamepadsJoysticks and WheelsLight gunsDance padsMotion-sensing controllersClick to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Game Controllersbelow Chapter 5Game ControllersDiscovering Computers 2011: Living in a Digital World Chapter 522Page 270 Figure 5-19Digital Cameras• A digital camera is a mobile device that allows users to take pictures and store them digitallyDiscovering Computers 2011: Living in a Digital World Chapter 523Page 272Studio camerasField camerasPoint-and-shoot cameraDigital CamerasDiscovering Computers 2011: Living in a Digital World Chapter 524Page 272 Figure 5-20Digital Cameras• Two factors affect the quality of digital camera photos:Discovering Computers 2011: Living in a Digital World Chapter 525Page 273• Resolution is the number of horizontal and vertical