An architecture for processing a data stream forming matrices of pixels of dimension Nl\xd7Nc. The card ejecting mechanism includes a body having a card insertion hole through which a card is insertable in a push manner; a cover openably mounted at the body for covering the card; and an operation unit disposed at the cover for releasing a locked state of the cover and releasing a locked state of the card when pushed. The electrical transmission signal is transmitted to one of a first set of channels through a relay element in accordance with a state of the relay element. The area and length of the tube are such that the fluid within the tube has a resonant condition at a frequency that is the same as at least one frequency of the vibration and noise that is to be reduced or removed in the hydraulic system. The LED element is detachably supported by the plate spring-like conductive terminals through the feeding terminals and receives a power supply from both sides of the feeding terminals.