The use of various novel oxime ethers are described as fragrance chemicals. Each rotor wheel includes buckets at the periphery thereof. The interval of transmission of command signals to one district is controlled to be longer than or equal to the time \u0394tn necessary for the tap device to which a command signal was previously transmitted to finish tap output setting operation. Methodology of the present invention can be utilized to form semiconductor constructions suitable for incorporation into highly integrated circuitry. This provides for continuity of communication.