Part A =]

I play the piano, and this keyboard I have is the object I dislike.

Visibility
- A clear keyboard
- A large on/off switch.
- But there are way too maybe buttons
- A fairly small screen

Feedback
- You get a different instrument sound when you input a different code.
- The keys are way too sensitive
- Sound comes out when keys are not intentionally being played.

Mapping
- There are labels saying which number code is which sound, but it’s still too complicated
- The labels are too small

Affordances
- The keyboard has lesser keys then an ordinary piano, this makes it impossible to play some songs.
- Also, this stand is pretty fragile, it is shaky when the keyboard is being played.

Physical Constraints
- Again, there aren’t enough keys to play some of the songs.
- There is no pedal, which makes it less suitable for a higher level player.

Habituation
- Keyboards are generally easy to use. It is obvious to define the tones when different keys are being pressed. The other functions of it might be a bit complicated. And it is not suitable for a piano player since a piano is way better!