1. Mechanical keyboards use similar metal touch switches. The working principle is to make the contacts turn on or off. It has the characteristics of simple process, high noise, easy maintenance, strong sense of rhythm when typing, and long-term use. .
2. Plastic membrane keyboard (Membrane) The keyboard is divided into four layers inside, which has no mechanical wear. Its characteristics are low price, low noise and low cost, but the feel will change after long-term use due to material problems. Has occupied the vast majority of the market.
3. The structure of the conductive rubber keyboard (Conductive Rubber) contacts is connected through conductive rubber. There is a layer of raised conductive rubber inside the keyboard, each key corresponds to a protrusion, and the contacts below are connected when pressed. This type of keyboard is a transition product in the market from mechanical keyboards to membrane keyboards.
4. Contactless electrostatic capacitance keyboards (Capacitives) use the principle of a similar capacitive switch, and the change in the distance between the keys changes the capacitance and then drives the encoder. It is characterized by no wear and good sealing.