Keyboards, Mice, and Other Input Devices

1. Keyboards, Mice, and Other Input Devices Career Portals of Information Technology Principles of Information Technology

2. What does T.E.K.S. mean? • All subjects in grades K-12 have TEKS The TEKS is for students and teachers in the state of TEXAS  • Texas • Essential • Knowledge & • Skills

3. TEKS • 130.272 (B) identify major hardware components and their functions such as the central processor unit, input and output peripherals, and storage systems and devices; CPU- Central Processing Unit

4. TEKS 130.272 (D) • demonstrate understanding of the process of connecting peripheral devices;

5. TEKS 130.272 (E) • demonstrate proficiency in the use of a variety of input devices such as mouse, keyboard, microphone, digital camera, printer, scanner, and optical disk reader.

6. Unit I Objectives Students in Career Portals of Information Technology should be able to • Describe the function of the keyboard • List the five steps a computer follows when accepting input from a keyboard • Learn the preventive maintenance of the keyboard

7. Unit I Objectives Students in Career Portals of Info Tech should be able to • Describe the purpose of a mouse and the role it plays in computing • Identify the five essential techniques for using a mouse • Learn the preventive maintenance techniques associated with the mouse • Identify other common input devices

8. Keyboards, Mice, & Other Input Devices Vocabulary Words • Peripheral • Technique • Keyboard • Mouse • Input • Alphanumeric • Cursor • Modifier • Function • Keypad • Ergonomic • dragging

9. Peripherals a device or unit that operates separately from the CPU but is connected to it,

10. Keyboards • In the early days, computers accepted input on cards and paper tape • Keyboards appeared back in 1983 • Most keyboards today are IB Enhanced AT-style keyboards

11. Keyboards • The standard keyboard layout consists of five different groups of keys: • Alphanumeric keys • Numeric keypad • Function keys • Cursor movement keys • Modifier keys

12. Keyboards Figure 1. Peter Norton’s Introduction to Computers 4th Edition

13. Keyboards • Long periods of time on the keyboard can cause injuries • An ergonomically designed keyboard can help prevent some of these injuries • Good keyboard practices can also help prevent injuries

14. Ergonomic • (especially of workplace design) intended to provide optimum comfort and to avoid stress or injury

15. Ergonomic • Long periods of time on the keyboard can cause injuries • An ergonomically designed keyboard can help prevent some of these injuries • Good keyboard practices can also help prevent injuries

16. Modifier Keys • A special key (or combination) on a computer keyboard that temporarily modifies the normal action of another key when pressed together Holding the Shift Key and letter A at the same time will give you an uppercase (Capital) letter

17. Keyboards The function of the keyboard Figure 2. Peter Norton’s Introduction to Computers 4th Edition

18. Keyboards • Preventive Maintenance • Disconnect the keyboard from the computer • Vacuum the keyboard to remove any loose dust, crumbs, and/or debris • A small brush can loosen some of the material

19. Keyboards • Preventive Maintenance Continued • A can of compressed air can also help remove the dust • Clean the keyboard with a mild glass cleaner or isopropyl alcohol using a cloth and cotton swabs

20. Modifier Keys

21. Function • The function keys are used to perform specific tasks. They are labeled as F1, F2, F3, and so on, up to F12. The functionality of these keys differs from program to program

22. Keypad • the keyboard has a keypad

23. Laptop • Some laptops don’t Have a keypad purchase one that connects to it (peripheral)

24. The Mouse • Invented by Douglas Engelbart in 1963 • A pointing device that moves a graphical pointer on the screen AKA cursor • Can be used to issue commands, draw, and input other tasks

25. The Mouse The mouse is controlled by using the following techniques: • Left clicking • Right clicking • Double right click • Pointing • Dragging

26. The Mouse • The mechanism for detecting motion is a combination of optics and electronics. • The mouse contains motion-detecting rollers that are connected to small disks.

27. The Mouse • Invented by Douglas Engelbart in 1963 • A pointing device that moves a graphical pointer on the screen AKA cursor • Can be used to issue commands, draw, and input other tasks

28. The Mouse • As the disks spin, the slots in the disks break a light beam going from an LED to a photo-detector. • The rate that the light beam is broken tells the computer how fast the mouse is going and in what direction.

29. The Mouse: Preventative Maintenance • Turn the mouse upside down and twist the restraining cover and remove the ball. • Wash the ball in warm soap water, rinse, and dry it completely with a lint-free cloth.

30. The Mouse: Preventative Maintenance • The mouse should be cleaned often to remove the lint and grime that collects on the rollers and on the ball. • Turn the computer off and disconnect the mouse from the computer.

31. The Mouse: Preventative Maintenance • Shake any loose material out of the mouse case, and examine the three axles. • Remove any lint from the axles using a can of compressed air. You may need to scrape the lint loose the with a cotton-tipped swab or with your fingernail.

32. The Mouse: Preventative Maintenance • Shake out the debris you scrap off. • Replace and secure the mouse and place the cover back • Clean the outside of the case if necessary. • Always keep the mouse pad clean. Wipe it with a damp cloth.

33. Input Devices • A peripheral used to provide data and controls signals to an information processing system (computer)

34. Input Devices • A peripheral used to provide data and controls signals to an information processing system (computer)

35. Other Input Devices • Some other input devices include variants of the mouse, such as a scanner, a web cam, and an integrated pointing device such as a joystick. • Digital cameras, video cameras, and scanners are used for inputting graphics and text into the computer. • Pens, touch screens, and microphones are also common alternatives used for inputting.

36. Return to the agenda • Bring this assignment to me for a grade when finished • Then go back to the Microsoft Word document to view the agenda, for what to do next  • THANKS