Playing the badminton game machine circuit principle, when making the badminton game machine, the 10 LEDs are arranged according to the track of the badminton in the air movement, and the 10 LEDs are controlled by the decimal counter MC14017B to be sequentially illuminated, which can be regarded as the badminton moving in the air. When the ball "bounces" to the Q8 position, press the switch in time, the process is like picking up the ball, and the ball is hit to the other side. When the ball returns to position Q2 (equivalent to the ball landing), the ball will be automatically played back. If the ball returns to position Q8 and the player fails to catch the ball in time. The game stops, indicating a catch error. The MC14011 is composed of a clock oscillator and a ball-collecting time detecting circuit. When Q8 is at a high level, the ball switch is pressed, and a complex pulse is formed on the 15th leg of the MC14017B through the two-stage NAND gate. When the power switch is turned on, a reset pulse is also formed, so that the counter person 0 starts to blink, and the LEDW flashes in sequence. When the ball fails, Q is high, ENABL is also high, and the counter stops working.
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