Electronic amusement machine principle circuit diagram

Today I will share with you the principle circuit of an electronic amusement machine. The circuit mainly resets IC2 by pressing SB2 by the host, and VD1A-VD9A do not emit light. The person who points out the prize points out which position of the prize (such as No. 5), then the host closes the switch S5 to make VD5B light up. Then the person who clicks the prize presses SB1, and IC3 is called to play the congratulatory message "Gong Xi Fa Cai". At the same time, the oscillation circuit starts to oscillate, and its pulse signal acts on the CP terminal of IC2, and VD1A-VD9A flashes rapidly in the clockwise direction. When SB1 is released, IC1 and IC3 stop working because the power supply is cut off. At this time, only one of VD1A-VD9A is lit or all are extinguished. If VD5A happens to light up, it will light up at the same position as VD5B, and the prize will be awarded successfully. As shown below.