A backlighting assembly for use in a keypad assembly. When an operator selects one of the correction contents displayed, the image display apparatus corrects the acquired data based on the correction content selected. The read component is coupled to the support structure, and the sensor component is coupled to the capture enclosure where it is positioned in close proximity to the read component by capture enclosure. The first correction component corrects gradient information of each section based on the specified fuel consumption in the each section.