Embodiments of the invention are directed to roll assemblies configured to exhibit improved wear resistance of stud elements. A software application is provided that enhances current browser software. The processing arrangement is configured to cause the display arrangement to display at least one characteristic of the vehicle in accordance with profile information assigned to a selected profile of a plurality of profiles. During the conversion from helicopter mode to airplane mode, the scissors wing generates lift to offload the rotating rotorscissors wing and eventually the offloaded rotorscissors wing’s rotating speed is slowed and stopped so that the rotorscissors wing can be locked at a specific position and the conversion can be achieved. An amplifier circuit amplifies a residue in AD conversion, and the amplified residue is supplied to the AD converter circuit through the switch circuit and converted to a digital value by the AD converter circuit.