Touch screen history.......
Touch Screens History
A touch screen is an electronic visual display, were the user can control the screen with one or more fingers.
E.A Johnson published a short article on his work on capacitive touch screens which was published in 1965.
Between 1970 and 1980 there were two major developments in the tough screen computer world. There was the PLATO IV which was invented in 1972 in America. Though they had started work on the touch screen in 1960's, these were all single touch.