Where double-side printing is effected on a single copying paper sheet to produce images of two originals thereon, the directions of images on the originals can be considered. According to one aspect of the present invention, a method for determining an average number of times each block of a number of blocks within a non-volatile memory of a memory system has been erased includes obtaining an erase count for each block that indicates a number of times each block has been erased. The current flowing from a sense amplifier circuit to the adjacent bit line BL4 via adjacent memory cell can be reduced, and thus the current in the sense amplifier circuit is stabilized quickly. By utilizing the parsing function, text can be scanned for potentially sensitive data by using a variety of techniques, such as a learning algorithm. An innovation sequence is produced by selecting a code from each of a plurality of codebooks based on the code index. The cooling channels are formed by corrugated components, the corrugation shape of which matches the outer surface, including the outer contour in corner regions of the coil.