| 摘要 |
PURPOSE:To prevent data destruction at the time of interrupting a rewriting process by holding adjoining data in two addresses in the middle of a data writing action. CONSTITUTION:A data input means 1 inputs regular data such as a film counting value to a writing deleting means 2. A storing medium 3 which is writable-deletable such as an EEPROM has plural addresses, for example, A0-A3, an address designating means 4 designates a writing address in a prescribed order at the time of writing, and simultaneously, the means 4 designates the address, as a deleting address, in which the data are written two or more times before, for example, two times before. Consequently, in the middle of the data writing action, the adjoining data are held in at least two addresses. Thus, the data destruction at the time of interrupting the rewriting process can be prevented. |
