Information is displayed by irradiating a visible light on a specific position based on at least one of vehicle state information, vehicle surrounding information, and vehicle interior information. The multi-disciplinary educational tool can also comprise a playing surface to represent a plurality of geographical regions. The first substrate comprises a first substrate body, pixel units arranged in an array on the first substrate body, data lines disposed on the first substrate body and electrically connected to the pixel units, a first insulation layer and scan lines disposed on the first substrate body and electrically connected to the pixel units. Using the pulses, the controller calculates a speed of the cooling fan. The oxidation-blocking layer is formed on the activation layer. If a setting has been made not to output any background object, a page having no foreground object is handled as a blank page, thereby suppressing transmission.