| 摘要 |
Circuit for monitoring the locking period of an apparatus with programmable locking period. It comprises a processing means 30 delivering on one path 46 a signal for a period between the current date day JC, hour HC and a programmed date of opening day JP, hour HP, a means 32 of comparing this period with a predetermined period, a means 34 of signalling this period and a means of alarm 36 if the said period is greater than the predetermined period. <IMAGE>
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