A two-point touch determining module performs determination of a one-point touch or a two-point touch. A one-point touch coordinate detecting module detects a coordinate of the one-point touch. A two-point touch coordinate detecting module detects two-point coordinates of the two-point touch. A display screen generating module generates a display screen of a resistive film type touch panel. A touch input controlling module determines whether the display screen is a one-point detecting screen or a two-point detecting screen. The touch input controlling module performs the coordinate detection using the one-point touch coordinate detecting module in a case of the one-point detecting screen. The touch input controlling module performs the coordinate detection using the one-point touch coordinate detecting module or the two-point touch coordinate detecting module according to a determination result of the two-point touch determining module in a case of the two-point detecting screen.