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7 Segment Led Display (Common Cathode)

7 Segment Led Display (Common Cathode)

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  • This is 7 Segment Led Display (Common Cathode)
  • This 7-Segment Led Display is simple and easy to interface with a microcontroller
  • Sample Codes and libraries are available for all popular microcontrollers
  • This has high Light Intensity Output and offers the best viewing experience compared to LCD Displays
  • These displays are the cheapest displays available

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).

Read more: Implementation of 7 segment LED display Controller on FPGA

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 a 7 Segment Led Display in your Arduino project, then you will need a few components like breadboard , jumper wires , resistors , capacitors and transistors.

Robocraze offers at best Common Cathode 7 segment display price in India. Don't settle for anything less than the best— Buy Common Cathode 7 Segment Display now for your next project from Robocraze. 

Common Cathode Configuration 

 

Common Cathode Configuration

 

Common Cathode 7 Segment Display Truth Table

In a common cathode 7 segment display, all the cathodes of the LEDs are linked together. Each LED is accompanied by a current-limiting resistor connected between it and the +VCC. In this configuration, to activate a specific LED, it is connected to +5V. Thus, by connecting inputs a to g to VCC, digits ranging from 0 to 9 can be displayed. For instance, to display the digit 3, LEDs a, b, c, d, and g will emit light, while the remaining LEDs will remain inactive. Consequently, the illuminated LEDs will take the form of the digit 3.

common cathode 7 segment display truth table

Common Cathode 7 Segment Display Pinout:

Common Cathode 7 Segment Display Pinout

 

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

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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

4. What is the difference between common anode and common cathode 7 segment display?

         The primary distinctions between common anode and common cathode are as follows:

  • Common cathode: All of the LED segments' cathodes are linked together and connected to the ground in a common cathode configuration. A current-limiting resistor connects the anode of each segment separately to a positive voltage source (Vcc). A HIGH (Vcc) signal must be applied to a segment to make it light up.
  • Common anode: All of the LED segments' anodes are linked together and coupled to a positive voltage source, usually Vcc, in a common anode configuration. A current-limiting resistor connects the cathode of each section separately to the ground. Applying a LOW (0V) signal to a segment's corresponding pin will light it up by grounding it. Completing the circuit, permits current to pass through that section and lighting it.

5. What is the common cathode IC number for 7 segment?

The 74LS47 or 7447 is a popular IC used to drive common cathode 7-segment displays. It acts as a BCD-to-7-segment decoder/driver IC.

 

6. Is common cathode positive or negative?

A common cathode is a negative side. when we talk about a common cathode configuration, it means that the cathode terminals of all the LEDs in the display are tied together and connected to the ground (negative voltage). This makes the cathode the common terminal shared by all segments.