A containerized portable shelter which is small and light enough for helicopter transport but which can also travel through container channels and has increased expandability of the floorspace is provided. Microprocessor-operated devices are designed for worst-case operating conditions, a thermal design power limit, such as software application instruction mix, and ambient temperature around the microprocessor. Digital logic 352 is used to process or output an image or related data 334. The present invention also advantageously enables the formation of an alignment feature early in the semiconductor device fabrication process. The sign mounting hardware is coupled to the housing.