In a case where a position of a recognized cell is shifted from a position of a ruled line of an actual cell, if the recognized cell is deleted, a part of the ruled line of the actual cell is deleted. The first transistor, the at least one second transistor and the plurality of third transistors are identical. If at least one of the body axes of the device is held horizontally in operational use, an educated guess can be made about the actual orientation of the device with respect to the earth.