| 摘要 |
PROBLEM TO BE SOLVED: To simply and inexpensively change a lending ball exchange rate in a lending ball putting-out device putting out lending balls of a number according to a price paid. SOLUTION: A backup RAM 19 is provided on the putting-out control board 18 of a lending ball putting-out device 16 putting out lending balls, and a basic ball lending number K (number of balls put out per 100 yen) is stored in the backup RAM 19. In addition, the putting out control board 18 is provided with a ball lending number change switch 20 for changing the basic ball lending number K and a ball lending number display section 21 for displaying a current basic ball lending number K. When the ball lending number change switch 20 is operated in a specific operation pattern, by changing the control mode of the putting-out control board 18 to a lending number change mode and by switching on the ball lending number change switch 20 during the ball lending number change mode, the basic ball lending number K is changed. On that occasion, the basic ball lending number K is decreasingly changed by 1 and after the basic ball lending number K reaches the lower limit, it is returned to the upper limit value.
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