To move an arrow only on the menu positions to select the menus by moving discontinuously the arrow on the menu positions according to the moving extents of the arrow that moves on a display screen.

The signals which are inputted from a mouse 1 are counted, and the right moving direction of the mouse is detected together with its moving extent set at 5. In such a case, an arrow (a) moves to an arrow (b) set on a menu A. Then the arrow (a) moves to an arrow (c) set on a menu B when the moving extent of the mouse is set at 15. When the moving extent is set at 30, the arrow (a) moves to an arrow (d). A storage part contains an arrow position table which previously stores the relation between the menu positions and the arrow display positions. Therefore, the arrow display positions corresponding to the positions of menus A to D can be read out. Thus the arrow (a) can discontinuously move to the arrows (b) to (e).