System hardware design schematic

Crystal Insert 49S 11.35*4.65*3.6MM 11.0592MHZ

The picture shows the schematic diagram of the system hardware design. In the figure, the ULN2803 is an 8-bit reverse driver.

System hardware design schematic

1 Use the P1 interface to control the on and off of eight LEDs of 8 colors.
2 requires 8 LEDs to be sequentially lit and extinguished.
The requirement for 3 sequence lighting and extinction is that each lamp flashes 10 times and shifts left 1 time.