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Atmel AVR Mikrocontroller

7-Segment Codierung

Codierung der Anzeige HDSP-315E mit gemeinsamer Anode

Um mit einem Mikrocontroller eine 7-Segment Anzeige ansteuern zu können, muss eine binär zu 7-Segment Codierung vorgenommen werden.

In diesem Beispiel soll eine 7-Segment Anzeige mit gemeinsamer Anode (+ Pol) angesteuert werden. Das bedeutet, dass das aktive Signal ein Low-Signal ist.

Um Beispielsweise eine 0 darzustellen, müssen alle äußeren Segmente leuchten. Somit wird ein Low-Signal an den Segmentenanschlüssen für a,b,c,d,e und f benötigt. Die Anschlüsse für das Segment g und den Dezimalpunkt dp erhalten ein High-Signal und bleiben damit dunkel.

 

Codierung 7-Segmentanzeige

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