FIELD: entertainment games. SUBSTANCE: device has unit of primary optical photodetectors, integrated assembly of two directed illumination sources, infrared light source, two photodetectors. First photodetector is connected through two comparators and two envelope detectors to first and second inputs of unit for detection of zero position of roulette wheel. Outputs of unit for detection of zero position of roulette wheel are connected to inputs of detector of direction of roulette wheel rotation, which outputs are connected to inputs of unit for ball position detection, which outputs are connected through third envelope detector and comparator to output of second photodetector. In addition device has two logical processing units, programmed memory unit, digital indicator, which control input is connected to outputs of logical processing units through AND gate. Device operations are put in synchronization by signals from pulse generator. EFFECT: increased reliability of displayed winning combination. 4 cl, 7 dwg
