An electronic information apparatus for receiving information input in a plurality of formats and receiving a particular category of information capable of being registered in at least two corresponding formats includes a coordinate input apparatus for inputting information containing the particular category of information and a discriminator, for identifying one of the formats, associated with the particular category of information, a detector for detecting the discriminator, an extractor for extracting the particular category of information associated with the discriminator from the input information, and a memory for registering the extracted particular category of information in the format identified by the discriminator detected by the detector and for registering the particular category of information in another corresponding format.