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7 Segment Led Display (Common Cathode)
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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).
Seven-segment displays or ( 7 segment displays) are widely used in digital clocks, electronic meters, basic calculators, and other electronic devices that display numerical information. If you want to use 7 Segment Led Display in your Arduino project, then you will need a few components like breadboard , jumper wires , resistors , capacitors and transistors.
Common Cathode Configuration
Package Includes:
- 1 x 7 Segment Led Display (Common Cathode)
7 Segment LED Display Specifications
| Device type | Seven Segment Display |
| Display type | LED Display |
| Pin number | 10 |
| Pin type | DIP |
| Dimension | 19mm x 12mm x 7mm |
| Weight | 5 grams |
1. What is common cathode 7-segment display?
- In a common cathode display, all 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).
2. How does a 7 segment LED display work?
- A 7 segment display consists of seven distinct illuminating segments. These are arranged in a way to form numbers and characters by displaying different combinations of segments. These seven segments are used to display binary data.
3. How do you know if a 7-segment is anode or cathode?
- Put your multimeter's black lead on pin 3 or 8. Both are common pins as they are internally connected. Now connect the red lead of your metre to any other pin, such as 1 or 5. If any of the display's segments glow then the display is a common cathode
