Answer:
1.similarity:
- they are both editing keys
3.ergonomics are designed keying devices that alleviates wrist strain experienced when using ordinary keyboard for long hours
4.
- .<em>a</em><em> </em><em>click</em> is pressing and releasing the left mouse button once
- <em>right </em><em>click</em> is pressing the right mouse button once to display a short cut menu with commands from which a user can make a selection
- <em>double </em><em>click</em> is pressing the left button twice in rapid succession
- <em>drag </em><em>and </em><em>drop</em> is where by the user drags an icon or item from one location on the screen to another.
Mechanical energy converts chemical energy into rotational or linear motion.
