PURPOSE: To accurately divide into a period to increase a prize winning ratio and a period except this and to obtain correct data for adjusting a nail by operating at least either of the data of the number of out balls and the number of safe balls in the condition being output any of a detecting signal and a delaying signal and the data in a non-output condition.
CONSTITUTION: A first counter 4 counts the out ball and generates a counted pulse. A second counter 5 counts the safe ball and generates the count pulse. When the number of out balls and the number of safe balls at respective action period and non-action period of an electric accessary 6 are operated, the out ball and the safe ball in the delaying time until the discharging of the safe ball due to the prize-winning to the electric accessary 6 is wholly completed are considered and the data of the number of the difference balls and the number of outgoing balls of a pinball game device 1 based on the arithmetic result are divided correctly into the data of the action period and the data of the non-action period of the electric accessary 6 and obtained. Based on such data, the nail adjustment of the pinball game device 1 can be accurately executed.
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