Table 1.
Device | Advantages | Disadvantages |
Pager15 16 17 |
|
|
Cell phone6 18 |
|
|
Telephone19 |
|
|
Overhead page20 |
|
|
Planning board1 21 |
|
|
Device | Advantages | Disadvantages |
Pager15 16 17 |
|
|
Cell phone6 18 |
|
|
Telephone19 |
|
|
Overhead page20 |
|
|
Planning board1 21 |
|
|