Structure and function for inputting information preferably includes a display device having two cameras in respective corners thereof. Also, a fluid purifying apparatus that includes a vessel that includes a first interior compartment for containing a purifier material and a second interior compartment for containment of a fluid containing impurities, wherein the first interior compartment is separated from the second interior compartment by a fluid permeable support, and a rupturable seal. The invention has an increased number of meshed teeth between each of the first and second gears and the ring gear so as to distribute a radial load to more teeth in rotation. These steps may be performed by a programmed controller, or other hardware, instead of, or in addition to, being performed in accordance with software. Those magnetic particles bound to analyte have a larger size or smaller magnetic moment that prevents them from being moved to adjacent micromagnets, thereby affording separation of the analyte. The screw assembling is carried out with the aid of ring nuts or screw threads between the casing and the casing cover.