Feature(may vary by option.)

●Module Operating Voltage: 5V
●Uses a MAX7219 control chip and integrated BCD encoders, scanning circuits, and driving circuits inside
●✅Chip occupies only three cascadeable IO ports, and integrated scanning circuits within the chip do not occupy system resources. Integrated analog and digital brightness control, consistent brightness display at each point
●✅Internal integrated static RAM, you can address each data during updates without changing all displays
●✅Package Includes: 2 x Max7219 8x8 Blue Light LED Display Module, 1 x 11.8" Female to Male Dupont Cable 10 Pin

[Blue]

Description

Specifications:
Single module can drive 8 x 8 dot matrix common cathodes
Module Operating Voltage: 5V
Module Dimensions: 3.2 x 3.2 x 1.3 cm / 1.26 x 1.26 x 0.5 inches (L x W x H)
4 screws hole, diameter 3mm
Supports modules with input and output interfaces, multiple modules cascade support

Wiring Instructions:
Left Block to Input Port, Right Output Port
If you want to control one module, simply enter the CPU into the port that it received
If three or more modules cascade output input termination CPU, the first two input and output termination module first module, the first two modules of the terminal input terminal of three modules etc.

51 single chip microcomputers for example.
VCC-5V
GND-GND
DIN-P22
CS-P21
CLK-P20

Package Includes:
2 x Max72198x8 Blue Light LED Display Module
1 x 11.8" Female to Male Dupont Cable 10 Pin