| 摘要 |
PURPOSE:To reduce the number of times of access and to realize a high-speed transfer, by outputting a writing instruction after carrying out a desired data process by a computer when a data process is required, in case a data transfer is carried out to a sequential access memory device. CONSTITUTION:A computer 1 delivers in a simple way a reading instruction to a sector requiring no change of its contents, and delivers a writing instruction to a sector requiring a change of its contents after giving a desired data process to the data that is read out by a reading instruction. In such way, a replacement of data equivalent to a track can be done in a simple way. As result, the access frequency is reduced and the data to be stored in a flexible disk device are renewed in a high speed. |
