7 Segment Led Display (Common Cathode)

7 Segment Led Display (Common Cathode), is a form of an electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix displays.

In a common cathode display, all of the LED segment cathode connections are connected to logic "0" or ground. Individual segments are illuminated by applying a "HIGH" or logic "1" signal to the individual Anode terminals via a current limiting resistor (a-g).