Methods, systems, and computer readable media for determining social compatibility using a selected group are disclosed. A requester’s identity determines action paths to be executed in order to enable access to fields. In one embodiment, a gate is positioned between the collecting region and the discharge region, the gate being movable between an open position, in which the gate permits solid material to pass from the collecting region to the discharge region, and a closed position, in which the gate prevents return movement of solid material from the discharge region to the collecting region. Using a comparator 94 to compare the input voltage of the power switch 90 to the output voltage of the power switch 90, an output signal is generated to control the current limit threshold. Also included is circuitry for sensing the rate of change of TDIFF and determining if it exceeds a predetermined value. In this manner, a new error correction code can be calculated prior to writing the data without the need to access the memory array again.