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Exploring Computer Input Devices - 2012 Edition

Learn about various input devices including keyboards, pointing devices, touch screens, pen input, voice recognition, and more. Discover how input is essential for interacting with computers effectively.

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Exploring Computer Input Devices - 2012 Edition

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  1. Objectives Overview See Page 187 for Detailed Objectives Discovering Computers Fundamentals, 2012 Edition Chapter 5

  2. Objectives Overview See Page 187 for Detailed Objectives Discovering Computers Fundamentals, 2012 Edition Chapter 5

  3. What Is Input? • Input is any data and instructions entered into the memory of a computer Pages 188– 189 Figure 5-1 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  4. What Is Input? Page 188 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  5. Keyboard and Pointing Devices Page 189 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  6. Keyboard and Pointing Devices • A keyboard is an input device that contains keys users press to enter data and instructions into a computer Page 190 Figure 5-2 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  7. Keyboard and Pointing Devices • Most desktop computer keyboards have… Page 190 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  8. Keyboard and Pointing Devices • 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 workplace Page 190 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  9. Keyboard and Pointing Devices • 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 keypad Page 191 Figure 5-3 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  10. Keyboard and Pointing Devices • 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 wireless Pages 191 – 192 Figure 5-4 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  11. Keyboard and Pointing Devices Page 192 Figures 5-5 – 5-7 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  12. Touch Screens and Touch-Sensitive Pads • A touch screenis a touch-sensitive display device Page 193 Figure 5-8 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  13. Touch Screens and Touch-Sensitive Pads Microsoft Surface Touch-sensitive pads Page 193 Figures 5-9 – 5-10 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  14. Pen Input • With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selections Page 194 Figure 5-11 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  15. Other Types of Input Page 195 Figure 5-12 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  16. Other Types of Input • Video games and computer games use a game controlleras the input device that directs movements and actions of on-screen objects Pages 196 - 197 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  17. Other Types of Input Page 196 Figure 5-13 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  18. Other Types of Input • A digital camerais a mobile device that allows users to take pictures and store them digitally Page 197 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  19. Other Types of Input Page 197 Figure 5-14 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  20. Other Types of Input • Two factors affect the quality of digital camera photos: Page 198 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  21. Other Types of Input • Voice inputis the process of entering input by speaking into a microphone • Voice recognitionis the computer’s capability of distinguishing spoken words • Audio inputis the process of entering any sound into the computer Page 198 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  22. Other Types of Input • Music production software allows users to record, compose, mix, and edit music and sounds Page 198 Figure 5-15 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  23. Other Types of Input • Video inputis the process of capturing full-motion images and storing them on a computer’s storage medium Page 199 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  24. Video: Video Editing on Your Computer CLICK TO START Discovering Computers Fundamentals, 2012 Edition Chapter 5

  25. Other Types of Input • A Web camis a type of digital video camera that enables a user to: Page 199 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  26. Other Types of Input • A video conferenceis a meeting between two or more geographically separated people Page 199 Figures 5-16 – 5-17 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  27. Other Types of Input • A flatbed scanner creates a file of the document in memory • Works in a manner similar to a copy machine Page 200 Figure 5-18 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  28. Other Types of Input • Optical character recognition (OCR)involves reading characters from ordinary documents • A turnaround documentis a document you return to the company that creates and sends it Page 200 Figure 5-19 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  29. Other Types of Input • Optical mark recognition (OMR) reads hand-drawn marks such as small circles or rectangles Page 200 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  30. Other Types of Input • A bar code reader, also called a bar code scanner uses laser beams to read bar codes Page 201 Figure 5-20 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  31. Other Types of Input • RFID (radio frequency identification) uses radio signals to communicate with a tag placed in or attached to an object • An RFID readerreads information on the tag via radio waves • RFID can track: Page 201 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  32. Other Types of Input • Magnetic stripe card readersread the magnetic stripe on the back of cards such as: Pages 201 Figure 5-22 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  33. Other Types of Input • MICR (magnetic ink character recognition) devices read text printed with magnetized ink • An MICR readerconverts MICR characters into a form the computer can process • Banking industry uses MICR for check processing Page 202 Figure 5-23 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  34. Other Types of Input • Biometrics authenticates a person’s identity by verifying a personal characteristic Pages 202 - 203 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  35. Other Types of Input iris recognition system fingerprint reader Pages 202 – 203 Figures 5-24 – 5-25 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  36. Other Types of Input • A terminal is a computer that allows users to send data to and/or receive information from a host computer Pages 204 – 205 Figures 5-26 – 5-28 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  37. What Is Output? • Output is data that has been processed into a useful form Pages 206 – 207 Figure 5-29 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  38. What Is Output? • An output deviceis any type of hardware component that conveys information to one or more people Page 206 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  39. Display Devices • A display devicevisually conveys text, graphics, and video information • A monitor is packaged as a separate peripheral • LCD monitor • Widescreen Pages 207 – 208 Figure 5-30 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  40. Display Devices • Liquid crystal display (LCD) uses a liquid compound to present information on a display device Page 209 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  41. Display Devices • Plasma monitorsare display devices that use gas plasma technology and offer screen sizes up to 150 inches Page 210 Figure 5-32 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  42. Video: SID: Size Matters CLICK TO START Discovering Computers Fundamentals, 2012 Edition Chapter 5

  43. Display Devices • A CRT monitoris a desktop monitor that contains a cathode-ray tube Page 210 Figure 5-33 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  44. Printers • A printer produces text and graphics on a physical medium • Before purchasing a printer, ask yourself a series of questions Page 211 Figure 5-34 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  45. Printers Page 212 Figure 5-35 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  46. Printers • A nonimpact printerforms characters and graphics on a piece of paper without actually striking the paper Page 213 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  47. Printers • An ink-jet printerforms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper • Color or black-and-white • Printers with a higher dpi (dots per inch) produce a higher quality output Page 213 Figure 5-36 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  48. Printers Page 214 Discovering Computers Fundamentals, 2012 Edition Chapter 5

  49. Printers Page 214 Figure 5-37 Discovering Computers Fundamentals, 2012 Edition Chapter 5

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