A system and method are disclosed that provide device recognition. The computer includes a memory cache for all the subscribers of the country which allow to know which HLR to interrogate without searching one they have been found. The bearing is adapted for hinged articulation relative to the talar component and limited rotation relative to the tibial component. Further, by sequentially stopping at least one stage of the assembly and then synchronously rotating other stages, amplitude modulation is accomplished. The power supply circuit is configured so that as a voltage across Ct varies, VGX adjusts so that a voltage across CA is changed less than a change in voltage across Ct. The user loads a liquid sample into the openings, and the paper wicks the liquid sample away from the loading location, leaving cellular debris in the place of application.