PIC18: 7-segment displays

7seg-3d 7-segment displays are an effective and still widely used way of displaying alphanumeric data.

In fact they are quite simple, because they consist of 8 leds (decimal point included) connected in parallel and with the cathode (or anode) in common; by turning on specific leds ('segments') a number or letter is displayed.

Here we see the two types of displays:


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