PURPOSE:To improve the flexibility of the system by providing keys for setting or changing the number of prize balls, a purchase ball rate, the number of sets of terminals, and a discrimination code of a game store, on the back of an input operating device of a managing device. CONSTITUTION:When switches 421-424, 432-436 of the upper face panel (B) are turned on, an input console 412 of a managing device for managing and controlling each pinball machine, card issuing machine and account settling machine executes the corresponding processing, and turns on a built-in lamp. Also, the back (A) is provided with a test card switch 437, and a built-in switch 438 for instructing to set values of an exchange rate of a purchase ball and a store code, the total number of sets of terminal machines, the number of prize balls per one piece of prize-winning ball, and to change its set values at the time of leading in the system. In such a way, the number of prize balls and the purchase ball rate, etc., are changed freely and flexibility of the system can be improved, and also, a misoperation and an illegal operation can be prevented.
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