| 摘要 |
PROBLEM TO BE SOLVED: To enable operation data related to a big winning to be properly managed by distinguishing a normal big winning from a big winning without a ball discharge.SOLUTION: A management computer 100 comprises: storage means for storing operation information; update means for updating the operation information; calculation means for calculating the number of ball difference between the number of shot ball and the number of discharged ball during a generation period of the big winning; first determination means; and second determination means. The first determination means determines the case when the number of ball difference during the generation period of the big winning belongs to a predetermined first range is a big winning without a ball discharge, the case when the number of ball difference during the generation period of the big winning belongs to a predetermined second period is a normal big winning, and the case when the number of ball difference during the generation period of the big winning does not belong to any of the first and second ranges is an out-of-range big winning, respectively. The second determination means determines the case when a scheduled ball discharge during the generation period of the big winning belongs to a predetermined first range is a big winning without a ball discharge, the case when a scheduled ball discharge during the generation period of the big winning belongs to a predetermined second range is a normal big winning, and the case when a scheduled ball discharge during the generation period of the big winning does not belong to any of the first and second ranges is an out-of-range big winning, respectively. |
