common programming interface and a circuit. LED digital display connections and programming in the SCM system, usually LED digital display to show figures or symbols. Because of its clear display and high brightness, the use of low-voltage, long-life characteristics, the use of very extensive. 1. Section 7 LED displays introduction : remember we were young playing the "match stick game"?, crossing a match stick combination, makes up all kinds of graphics, LED display is actually such a thing.

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