computers

history of computers

touch screen

touch screen is on apple android and window these are some of the main mobile phone in the world to day

A touchscreen is an

input device

normally layered on the top of an

electronic visual display

of an

information processing system

. A user can give input or control the

information processing system

through simple or

multi-touch gestures

by touching the screen with a special

stylus

and/or one or more fingers