| 摘要 |
PROBLEM TO BE SOLVED: To totally judge the contribution degree of each kind of machine by providing a totalizing means by kinds of machines, an item component ratio calculating means, a number of machines managing means, a contribution degree calculating means or the like, calculating the contribution degree of each kind of machine on each item, and displaying the contribution degree or the like on a graph or the like. SOLUTION: A game center management device comprises a totalizing means by kinds of machines 120 including a sales totalizing means by kinds of machines 121, a number of balls totalizing means by kinds of machines 122, a lending number totalizing means by kinds of machines 123 and a rough gains calculating means 124. Tt comprises an item component ratio calculating means including a sales component ratio calculating means 131, a rough gains component ratio calculating means 132 and an operational component ratio calculating means 133, and a number of machines managing means 140 including a number of machine component ratio calculating means 141 and a division component ratio calculating means 142. Further it comprises a contribution degree calculating means 150 including a sales contribution degree calculating means 151, a rough gains contribution degree calculating means 152 and an operational contribution degree calculating means 153, and a value of the sales contribution degree and a value of the rough gain contribution degree or the like determined on the artitrary kind of machine is displayed by a graph by a graph display means 170.
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