| 摘要 |
PURPOSE:To obtain a means which can be limited once a day by comparing the day of the week of an existing timepiece unit with a fixed day stored in a day- of-the-week memory means, and executing a self-diagnosis program when no coincidence is obtained from said comparison. CONSTITUTION:The contents of a fixed day-of-the-week memory part 12 are defined as A; while the contents of a day-of-the-week register 43 are defined as B. Then a comparison part 13 is started by a power supply application detecting part 10 and compares input A and B with each other. When Anot equal to B is satisfied, a self-diagnosis program is executed. Then the contents A are set to the register 43. A self-holding action is performed with A=B and no change is produced even though the starting is fed from the part 10. The days of the week of a timepiece unit are changed every 24hr, and then the contents of the register 43 are also changed. As a result, the part 10 detects the application of the power supply and starts a latch 11. Thus the part 13 detects Anot equal to B to perform a self- holding action. In such a way, the latch 11 carries out the self-diagnosis processing once every 24hr to the starting given from the part 10. |
