An impedance matching wave filter includes an original wave filter and a match circuit. The device includes an elongate body. A cyclic switching of the readwrite state of the frame memories is performed, such that always two frame memories are in a write-state and one frame memory is in a read-state The frame memory in the read-state is read out synchronized to the common synchronization clock. A hash is employed for version control and to control changes at the data source. The first body is in contact with the first gate or spaced from the first gate.