For a "Tiny Cooling Fan" system, because there is interference and other factors, samples one time is not necessarily what we want the data, there may even have a considerable difference between the real data and. Hardware driver layer is responsible for getting data from the hardware layer and a layer of software to determine the validity of the data. For different data, "Tiny Cooling Fan" hardware driver layer may average, adding windows and other different methods for processing. As for the software driver layer results in a final state, the hardware driver layer according to the actual situation, according to different requirements translate into "Tiny Cooling Fan" hardware layer processing timing. By processing this layer, while we get the desired data, on the other hand, it will also be a layer of software layers with the real physical layer isolated.