An exemplary electronic device includes a cover, a motherboard and a driving module both disposed at an inner side of the cover, an electronic component fixed on the motherboard, and a fan duct mounted on the motherboard and covering the electronic component. The method may include selecting a PCM associated with the LUN from a plurality of supported PCMs. A general purpose stack is coupled to the decode circuit and configured to store other data. Next, the verification authority decodes the PIN by using the cryptographic key authenticates the user if the decoded PIN matches a PIN stored corresponding to the user. Another embodiment of the invention is directed to a system comprising an ADC having a usable input range that is greater than a nominal input range, wherein an offset exists at an input of the ADC and the offset is corrected using digital correction. More specifically, the present invention relates to the preparation of pellets of a catalyst or catalyst support material, suitable for use in high temperature conditions.