Prof.Rizzler on Instagram: "Am I weird Or Is She the odd one ?? A keyboard types on a PC by turning physical key presses into electrical signals. When you press a key, it pushes down on a switch or rubber dome beneath it. This closes a tiny circuit on a grid called the key matrix, letting the keyboard’s controller know exactly which key was pressed. The controller instantly converts that key press into a digital code, called a scan code. This code is sent to the computer through a USB or wireles