There is provided an externally readable memory for storing information in each memory address, and this memory is provided with an information refinement detection function; this memory comprises: an input means for entering first input data for comparing data items stored in the memory and second input data for comparing addresses in the memory, wherein the first and second comparison data are externally; means for determining matches/mismatches of both data items stored in the memory and addresses of the memory according to both of the input data provided by the input means, and further performing logic operations on both of the match/mismatch determination results; and means for outputting addresses with positive results of the logic operations. This memory may be applicable in a broad range of fields including intelligent information search as well as artificial intelligence.