MAX7219 8-digit display
MAX7219 LED driver with eight 7-segment digits · SPI write-only: DIN, CLK, CS (load) · 5 V · send register then data, 16 bits per frame

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Pins
- VCC
- GND
- DIN
- CS
- CLK