7 Segment Display

7 Segment Display
An animation showing an 8-segment display. Click the arrow button to count from zero to eight on the display. The segment letters and decimal point are labelled. The Seven Segment Display comes in two modes. The 'Common Anode mode' and the 'Common Cathode mode'. 1. The Common Cathode (CC) – In the common cathode display, all the cathode connections of the LED segments are joined together to logic “0” or ground. The individual segments are illuminated by application of a “HIGH”, or logic “1” signal via a current limiting resistor to forward bias the individual Anode terminals (a,b,c,d,e,f,g). 2. The Common Anode (CA) – In the common anode display, all the anode connections of the LED segments are joined together to logic “1”. The individual segments are illuminated by applying a ground, logic “0” or “LOW” signal via a suitable current limiting resistor to the Cathode of the particular segment (a,b,c,d,e,f,g).

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