| 摘要 |
PURPOSE:To speed retrieval by storing an independent auxiliary loop with retrieval code signals for retrieving stored data files im minor loops while bearing predetermined bit position relation with data areas. CONSTITUTION:An independent auxiliary loop 2 and minor loops 1 are divided into blocks each consisting of pages corresponding to the same page, and respective blocks of the minor loops 1 are regarded as data areas 12, 13- of files to write retrieval codes 22, 23-, indicating corresponding data areas, in respective corresponding block of the independent auxiliary loop 2. This division is carried out according to a predetermined means. Consequently, the retrieval of stored data files is performed easily at a high speed. |
