Introduction - If you have any usage issues, please Google them yourself
Here the 8X8 dot matrix is used to illustrate. 8X8 needs a total of 64 dot matrix of light emitting diodes, light emitting diodes and each intersection is placed in rows and column lines, when corresponding to a column of the 1 level, a row of 0 level, the corresponding diode lights; to display graphics or fonts, only need to consider the display mode.