PURPOSE: To exactly, quickly, and easily decide and input an input value related to each X, Y, and Z axis for the position instruction of a cursor.

CONSTITUTION: A light emitting device 2a and a second light emitting device 2c are arranged side by side a alternately or in two stages along the lower side common to the X axis of a panel 3, and a first light emitting device 2b is arranged side by side along the upper side so as to be opposed to the light emitting device 2a. The similar processing is operated to a Y axis. An input designating part 6 is connected with each first and second light receiving device 2b and 2c. An reflecting mirror 5 is adhered to the notched face of the tip of an input bar 4, the input bar 4 is used in a state that the tip is erect in the panel 3, and the input value related to each X and Y axis is decided from the erect position, and the input value related to the Z axis is decided from the direction and angle of the rotation around the axial line. The input value related to each X, Y, and X axis is obtained through the input designating part 6 based on each coordinate of each first and second light receiving device 2b and 2c arranged side by side which shades the light of receives the light.