An asynchronous processor that has reshuffled processes to implement precharge logic. The method may include obtaining transaction data associated with the product and obtaining ledger data associated with the product. The boundary surface is slanted with a predetermined angle to regulate the range of diffraction of the light according to the wavelength. A travel range of the displaceable element is monitored and a referencing procedure is performed cyclically after a prescribed time and is followed by a plausibility check if referencing is permitted at the point in time. The rotational motion of the focus adjusting ring is converted into a linear or progressive motion of a bracket by the cam surfaces.