" 3Pcs MAX7219 Dot Matrix Module DIY Kit SCM Control Module For Arduino Descriptions : The MAX7219 is an integrated serial input / output common-cathode display driver, it is connected to a microprocessor with 8digit 7segment digital LED display can also be connected to the bar graph display or 64 separate LED. On B BCD encoder including an on chip, multi channel scanning loop word drive, but also an 8 x 8 static RAM is used to store each data. Only one external register is used to set the current of each LED segment. A convenient four wire serial interface can connect all general purpose microprocessor. Each data can be addressed in the update does not need to rewrite all the display. MAX7219 also allows the user to select on each data coding or non-coding.
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