Three color color changing light circuit

Circuit working principle: lC. It is a decimal counting decoding integrated block. The two NOT gates of IC 2
, resistors and capacitors form a pulse generator. The signal is transmitted to the CP terminal of IC1 through pin 4 of IC
2 , so that Y0 and Y9 respectively output high level . When Y0 outputs a high
level, the LED directly emits red light; after a while, Y3 outputs a high level, and the LED emits
green light; when Y6 outputs a high level , vs1 and vs2 are turned on, and red and green light up at the same time
, turning it into orange. Light. In this way, red, green, and orange light appear alternately over and over again,
becoming a color-changing lamp.