| 摘要 |
<p>PURPOSE:To keep the secret of stored information while making change of a collation number possible by making it impossible that a person updates the collation number while holding stored information unless he knows the previous collation number. CONSTITUTION:When a correct collation number X is inputted, the control is returned to a main routine after clearing a value M indicating the number of continuous failures to zero. If an inputted collation number is not equal to X, the value M is counted up by one. When the value M becomes >=4, information data stored in a non-volatile storage device EEP-ROM9 is cleared, and execution of clearing is displayed on a display part 1, and the value M is cleared to zero, and the control is returnd to the main routine. When the value M is <4, data indicating that the inputted collation number is not correct is displayed on the display part 1, and the control is returned to the start stage of a number collating subroutine again.</p> |
