Led Matrix 8x8 1088BS with 2x74HC595D

Does anyone know the meaning of these pins?

Hi,

Vcc and GND are the power connections. They are on both sides so that the modules can be daisy chained.

CK will be the data clock and LE will be latch enable, I think. Again, repeated at both sides for chaining.

Finally there is DI, data in, and DO, data out. You connect the Arduino to DI and if you had more than one module you would connect DO on the first module to DI on the second module and so on.

Does that answer you question?

Paul