| 1 |
Safety |
16 |
The rotating photo display uses a low-voltage motor and does not involve sharp cutting tools, making it safer than the datum. |
|
Ease of Use |
0 |
The operation is simple and comparable to the datum, so there is no significant advantage or disadvantage. |
|
Portability |
5 |
The display can be made compact and lightweight, allowing it to be moved easily. |
|
Use of Standard Parts |
0 |
The rotating display can use commonly available motors, shafts, platforms and electrical components similar to standard components used in the datum. |
|
Cost |
9 |
The system can be constructed using inexpensive and readily available materials such as a small geared motor, lightweight platform and photo holders. |
| 2 |
Safety |
0 |
The clock is taken as the datum reference for comparison. |
|
Ease of Use |
0 |
The clock is the datum, therefore its ease of use is taken as the reference value. |
|
Portability |
0 |
The clock is the datum, therefore its portability is taken as the reference value. |
|
Use of Standard Parts |
0 |
The clock is the datum, therefore the use of standard parts is taken as the reference value. |
|
Cost |
0 |
The clock is the datum, therefore its cost is taken as the reference value. |
| 3 |
Safety |
16 |
A still photo frame has no sharp moving parts or high-speed mechanisms, making it safer than the rotating display datum. |
|
Ease of Use |
9 |
A still photo frame is very simple to operate because photographs can be viewed directly without operating a motor. |
|
Portability |
5 |
A still photo frame is lightweight and can be easily moved from one location to another. |
|
Use of Standard Parts |
0 |
The frame can be made using commonly available materials and standard components, making it comparable to the datum. |
|
Cost |
0 |
The cost of a still photo frame is considered comparable to the datum for this evaluation. |
| 4 |
Safety |
-16 |
A message box may involve electrical and electronic components, wiring and enclosed mechanisms, making it less safe compared with the simple clock datum. |
|
Ease of Use |
-18 |
A message box requires additional interaction and electronic components, making it more complicated to operate than the datum. |
|
Portability |
-5 |
Additional electronic components, display elements and housing can increase the size and weight, reducing portability. |
|
Use of Standard Parts |
5 |
A message box may require additional electronic components and specialized modules compared with the simple datum. |
|
Cost |
-9 |
The additional electronic components, display and control circuitry can increase the overall cost compared with the datum. |