Below each key, there is an electric button, and the full array of buttons is called a crucial matrix. These buttons are available in various designs, however, they all serve the exact same purpose: When you weigh down on a key, the essential weigh down on the button and also completes a circuit. This sends a signal to your computer, which is set to know the crucial matrix and also recognizes where that details signal is originating from. It then registers the character of the trick you pressed– as well as if you hold back the key, it will register it multiple times.