Keyboards and Keypads

Question 1

What is a key made of and how does it fit into the keyboard?

Answer 1

A key is made from plastic and has a small peg underneath which fits exactly into a hole in the keyboard when it is pressed

Question 2

How does a key come back up after being pressed?

Answer 2

There is a small piece of rubber under the key so it bounces back up again

Question 3

How does a keyboard/keypad work?

Answer 3

When a key is pressed, the small bar under the key pushes through a small hole and makes contact with a conducting membrane.