Input system a touch screen with an analog operating unit

An input system of a touch-sensitive screen comprises an analog control unit 50, which is attached to a touch-sensitive screen 10 and can operate the touch-sensitive screen 10th The input system of a touch sensitive screen, which has the analog operating unit 50 includes: a touch-sensitive screen 10 which recognizes a position of a contact point, and performs a process corresponding to said position; and the analog control unit 50, which is movably disposed and detachably attached to the touch screen 10 and an input signal of the touch screen 10 come generated by the touch screen 10 by a contact.