Question

how does the keyboard work?​

Answer 1

Answer:

A keyboard contains many mechanical switches or push-buttons called "keys". When one of these are pushed, an electrical circuit is closed, and the keyboard sends a signal to the computer that tells it what letter, number or symbol it would like to be shown on the screen.

Answer 2

Answer:

$your \: answer$

The key matrix is a grid of circuits underneath the keys. ... When you press a key, it presses a switch, completing the circuit and allowing a tiny amount of current to flow through. The mechanical action of the switch causes some vibration, called bounce, which the processor filters out.