How does a touchscreen work?

Touchscreens everywhere.

Touch screen monitor have the change in electrical current that occurs when a finger touches the screen. Touch screens are made from only 2 components, The touch sensor and The controller.

The touch sensor - It is a panel with a touch responsive surface.

The controller - it is the hardware that converts the voltage changes on the sensor into signals the computer or other device can receive.

Touch Screen History

First touch screen designed by E.A. Johnson at the Royal Radar Establishment in ,Malvern, UK. First articles appeared in newspaper in 1965 it showed the concept of the 1st touch that was made later in 1967.

Here are some devices that need touch screen to be operated