7 Segment Display Common Cathode

Overview

The 7 Segment Display Common Cathode is a popular LED display used to show decimal numbers and some alphabetic characters. It consists of seven individual LED segments arranged to form a figure-eight pattern, plus an optional decimal point. In this type of display, all the cathodes (negative terminals) of the LEDs are connected together.

Features

• Configuration: Common Cathode, where all the cathode terminals of the LEDs are connected together. The display lights up when a HIGH signal is applied to the respective segment anodes.
• Segments: 7 segments plus an optional decimal point, arranged to display numbers and certain characters.
• Display Type: LED, providing bright and clear numeric output.
• Current Rating: Typically operates at around 20mA per segment.
• Color Options: Available in multiple colors such as red, green, blue, and yellow.

Applications

• Digital Clocks: Ideal for displaying time in digital clocks.
• Counters: Used in counters and tally systems to display numeric values.
• Electronic Meters: Suitable for displaying measurements in voltmeters, ammeters, and other instruments.
• DIY Projects: Commonly used in hobbyist and educational projects for numerical displays.

Working Principle

In a common cathode 7-segment display, all the cathodes (negative terminals) are connected to a common ground. To light up a segment, a HIGH signal is applied to the corresponding anode (positive terminal). This configuration requires a current-limiting resistor to protect the LEDs and ensure proper brightness.

Advantages

• Ease of Use: Simplifies interfacing with microcontrollers and digital circuits using straightforward logic levels.
• Brightness: Offers clear and bright numerical displays, enhancing visibility.
• Versatility: Suitable for various applications including clocks, counters, and educational projects.

The 7 Segment Display Common Cathode is a reliable and effective component for displaying numerical data in a wide range of electronic applications, providing a clear and easy-to-read output.

7 Segment Display Common Anode (Pack of 5)