[ Exercise 21 ]

  1. The pros and cons must be known when choosing a compact disk (CD) recorder. [ more >>> ]

  2. The college might install 100Mbps cards although they have served the school well in the past. [ more >>> ]

  3. The college may keep up with change by installing 100 Mbps cards. [ more >>> ]

  4. To conclude to upgrade its system, the school may replace the 10Mbps cards with the 100Mbps network cards. [ more >>> ]

  5. The consumer must know how to use either a mouse or a track ball before purchasing a product. [ more >>> ]

  6. The mouse must be able to move around the workspace in any direction to perform its task. [ more >>> ]

  7. A trackball must stay stationary when limited space is available. [ more >>> ]
    An alternative correction would be
    A trackball must stay stationary when space is limited.

  8. A mouse may be easier for the beginning user to control since a hand is easier to move in any direction than a thumb. [ more >>> ]

  9. A trackball does not require total hand and arm movement to move the cursor around the screen. [ more >>> ]

  10. The mouse has a ball inside that moves along the workspace and controls electronic connections inside the device itself. [ more >>> ]

  11. The board of directors decides if the plan will be accepted. [ more >>> ]

  12. Laser printers have a slight edge over other types of printers in printing speed and cost. [ more >>> ]