Touchcomputers, also called All-In-One computers, are entire PC systems built behind a touchscreen. These computers run full versions of Windows or Linux and are designed to reduce the amount of space a computer uses. Since the computer is built into the screen, there is no need for a separate computer tower or rack.
A touchscreen is used primarily for one purpose – to allow a user to touch the screen instead of using a mouse. You find touchscreens in places such as smartphones, GPS devices, restaurant cash registers, kiosks, and vending machines.