A DRAM adopting a single-intersection memory cell array having randomly accessible data registers accessed whenever the chip is accessed externally. Whether or not the number of peaks exceeding a noise threshold in the frequency spectrum exceeds a predetermined number is determined. Other embodiments provided include a secondary arm for allowing accommodation of the device onto a vertically oriented wall or other surface. The second active load circuit controls the fall time of the differential signal. An additive source drips additive into the cup portion at a rate controlled by the controller, the additive being absorbed by capillary action by the laminar flow tube as it is passed through the nozzle to become the laminar flow jet.