| 摘要 |
PROBLEM TO BE SOLVED: To reduce the arithmetic processing loads of a CPU without lowering the detection accuracy of a winning ball. SOLUTION: This pinball game machine is provided with a game panel provided with a plurality of prize winning devices 21-29 inside a game area, a hitting device for hitting game balls into the game area, a plurality of prize winning detectors 21a-29a for detecting the entry of the game balls hit from the hitting device and moved inside the game area and a game controller for receiving detection signals from the respective prize winning detectors and controlling the whole game on the game panel. The game controller is provided with a plurality of input ports 57a and 57b for respectively inputting the signals from the prize winning detectors, reads input signals in the plurality of the input ports at a prescribed interruption interval and detects the entry of the game balls to the prize winning devices. The interruption interval is set corresponding to the respective prize winning devices for the respective input ports.
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