The present invention provides a semiconductor memory device which has data rotating or interweaving function. The aim of the present invention is to provide a memory device which can cut down the memory and alleviate the processing burden through reading the prescribed bit data that are stored in the addresses of a plurality of memories as the data output from the memory device and a memory application device. The memory device according to the present invention has multiplexers (301, ..., 3n-1n-2) for selectively outputting data in memory cells (000, ..., n-1m-1, n-1) outputted by buffer circuits (200, ..., 2n-1n-1>) one-bit by one-bit from each of memory cell arrays (10 to 1n-1) or n bits from one memory cell array.