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Input Devices and Methods: Enhancing Computer Interaction

This chapter explores various input devices, such as keyboards, mice, touch screens, pens, and more, along with different methods of input like voice recognition and video capture. Discover how these devices and methods enhance computer interaction.

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Input Devices and Methods: Enhancing Computer Interaction

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  1. Objectives Overview See Page 187 for Detailed Objectives Discovering Computers Fundamentals, 2010 Edition Chapter 5

  2. Objectives Overview See Page 187 for Detailed Objectives Discovering Computers Fundamentals, 2010 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, 2010 Edition Chapter 5

  4. What Is Input? Page 188 Discovering Computers Fundamentals, 2010 Edition Chapter 5

  5. Keyboard and Pointing Devices Page 189 Discovering Computers Fundamentals, 2010 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, 2010 Edition Chapter 5

  7. Keyboard and Pointing Devices • Most desktop computer keyboards have… Page 190 Discovering Computers Fundamentals, 2010 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 Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Ergonomics below Chapter 5 Page 190 Discovering Computers Fundamentals, 2010 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, 2010 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, 2010 Edition Chapter 5

  11. Keyboard and Pointing Devices Page 192 Figures 5-5 – 5-7 Discovering Computers Fundamentals, 2010 Edition Chapter 5

  12. Touch Screens and Touch-Sensitive Pads • A touch screenis a touch-sensitive display device Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Multi-Touch Screensbelow Chapter 5 Page 193 Figure 5-8 Discovering Computers Fundamentals, 2010 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, 2010 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, 2010 Edition Chapter 5

  15. Other Types of Input Page 195 Figure 5-12 Discovering Computers Fundamentals, 2010 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 Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Wii Remote below Chapter 5 Pages 196 - 197 Discovering Computers Fundamentals, 2010 Edition Chapter 5

  17. Other Types of Input Page 196 Figure 5-13 Discovering Computers Fundamentals, 2010 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, 2010 Edition Chapter 5

  19. Other Types of Input Page 197 Figure 5-14 Discovering Computers Fundamentals, 2010 Edition Chapter 5

  20. Other Types of Input • Two factors affect the quality of digital camera photos: Page 198 Discovering Computers Fundamentals, 2010 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, 2010 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, 2010 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, 2010 Edition Chapter 5

  24. Video: Video Editing on Your Computer CLICK TO START Discovering Computers Fundamentals, 2010 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, 2010 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, 2010 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, 2010 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, 2010 Edition Chapter 5

  29. Other Types of Input • Optical mark recognition (OMR) reads hand-drawn marks such as small circles or rectangles • An OMR device scans the documents and matches the patterns of light Page 200 Discovering Computers Fundamentals, 2010 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, 2010 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, 2010 Edition Chapter 5

  32. Other Types of Input • Magnetic stripe card readersread the magnetic stripe on the back of cards such as: Pages 201 - 202 Figure 5-22 Discovering Computers Fundamentals, 2010 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, 2010 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, 2010 Edition Chapter 5

  35. Other Types of Input iris recognition system fingerprint reader Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Biometric Input below Chapter 5 Pages 202 – 203 Figures 5-24 – 5-25 Discovering Computers Fundamentals, 2010 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, 2010 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 2010: Living in a Digital World Chapter 6

  38. What Is Output? • An output deviceis any type of hardware component that conveys information to one or more people Page 206 Discovering Computers 2010: Living in a Digital World Chapter 6

  39. Display Devices • A display devicevisually conveys text, graphics, and video information • A monitor is packaged as a separate peripheral • LCD monitor • Widescreen Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Widescreen LCD Monitors below Chapter 5 Pages 207 – 208 Figure 5-30 Discovering Computers 2010: Living in a Digital World Chapter 6

  40. Display Devices • Liquid crystal display (LCD) uses a liquid compound to present information on a display device Page 209 Discovering Computers 2010: Living in a Digital World Chapter 6

  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 2010: Living in a Digital World Chapter 6

  42. Display Devices • A CRT monitoris a desktop monitor that contains a cathode-ray tube • Have a much larger footprint than do LCD monitors Page 210 Figure 5-33 Discovering Computers 2010: Living in a Digital World Chapter 6

  43. 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 2010: Living in a Digital World Chapter 6

  44. Printers Page 212 Figure 5-35 Discovering Computers 2010: Living in a Digital World Chapter 6

  45. Printers • A nonimpact printerforms characters and graphics on a piece of paper without actually striking the paper Page 213 Discovering Computers 2010: Living in a Digital World Chapter 6

  46. 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 2010: Living in a Digital World Chapter 6

  47. Printers Page 214 Discovering Computers 2010: Living in a Digital World Chapter 6

  48. Printers Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Photo Printers below Chapter 5 Page 214 Figure 5-37 Discovering Computers 2010: Living in a Digital World Chapter 6

  49. Printers Click to view Web Link,click Chapter 5, Click Web Link from left navigation, then click Laser Printers below Chapter 5 Pages 214 – 215 Figure 5-38 Discovering Computers 2010: Living in a Digital World Chapter 6

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