Abstract: The setting of the vertical and horizontal axes of the screen displayed on a display region unit (9) of a mobile machine (1) for displaying a screen can be varied. The mobile machine (1) comprises a displayability judging section (32) for comparing the area of the display region unit (9) and the display area of the screen with currently set vertical and horizontal axes and judging whether or not the display area of the screen is within the area of the display region unit (9) and a display driver (13) for outputting, if the display area of the screen is larger than the area of the display region unit (9), information for prompting the user to change the setting of the vertical and horizontal axes of the screen. Therefore, the mobile machine (1) can lower the cost needed for development and enables adequate display of the screen by prompting the user to change the setting of the vertical and horizontal axes so that the setting may be adapted to the display region.

Abstract: A charging apparatus for charging a plurality of batteries has at least two modes including a first mode and a second mode, in which amounts of electricity to charge the batteries are set with reference to a fully charged capacity of the batteries. The apparatus includes mode selection means for selecting either of the first mode and the second mode. The first mode is a mode in which the batteries are charged until the batteries reach a fully charged state. The second mode is a mode in which the charging of the batteries is stopped before the batteries reach the fully charged state.