The first touch screen ever manufactured was added by E. A. Johnson at the Royal Radar building. It was a capacitative touchscreen, as averse to a resistive touchscreen, the same used in the Apple iPad today. The main edition likely could not aid pinch to zoom, but multi touch is now popular on android tablet devices. The application has cultivated profoundly and resistive touchscreens started to increase some recognition, even in the cell sector. Resistive touchscreens are constructed of layers that are applied, one after the other. The tension is observed as the layers compress into one another.Resistive touchscreens, are more commonly used in tablets like the Cintiq. The Cintiq is a graphics tablet hybrid that is needed significantly in the cartoon industry for movies like Kung-Fu Panda, Cars 2 etc. Back in 1967, Johnson figured it would be a great idea to assist with radar guidance systems, he even published two papers about it. 8' Android touch-screen Tablet PC have been with us ever since, but not always as a capacitive. The truth is, the video below is of the HP-150, which was released in 1983 and sold for $2795.