Keyboards are made of individual switches, called “keycaps”.
-The flat part of the keycap has scissor or dome switch panes underneath it.
-When you press on the keycap, the pressure causes these switches to close which completes a circuit that is then sent to the processor.
-While this process happens for just one key, there are many rows and columns of keys for all typing needs. A keyboard may have something like 104 different keys plus a spacebar and modifier buttons. A cheaper keyboard can use up to 120 keys per hand with no number pad at all so there are over 100 staples in one keyboard right there!