There are provided a display panel mounted in a tiltable manner on the front face portion of a main body portion, an operation panel to be mounted in a tiltable manner on the display panel, a tilt control part for controlling to tilt the display panel in response to a first tilt command and to tilt the operation panel in response to a second tilt command, and a memory part for storing inclination angle information of the operation panel corresponding to the inclination angle of the display panel. The tilt control part tilts the display panel in response to the first tilt command, and also tilts the operation panel based on the inclination angle information of the operation panel stored in the memory part.