A viewing system for viewing video displays having the appearance of a three dimensional image. A pill can thus be discharged from the dispenser in a simple manner by actuating the pushbutton. The video processing chip includes a video processor, a ratio detector, a timing controller, and a multiplexer. The DSC is operated, and the heat flow to the sample is calculated using a method that accounts for the leakage heat flows. These apertures and the channels assure that no screws or analogous components of another type of releasable fastener are not exposed within the box.