A transparent layer and a phosphor layer are covered on the LED chip for increasing light emission efficiency and evenness of the LED. In a digital frequency comparator in an ABS circuit, a DFF for storing an initial phase difference in a DPE signal output from a DPFD is prepared. The plated layer comprises an electrode pattern connected to a pattern of the board. , household, allows the storage and retrieval of household level information in addition to individual household member datainformation.