7-Segment Display Pinout, Terminals, and Circuit Diagram

Here, in this article, we are going to see a normal(1-digit) 7-segment Display Pinout Diagram, Terminals, and Circuit Diagram. A seven-segment display is a simple electronic device used to display numerical digits and some basic characters. It consists of seven LED (Light Emitting Diode) segments arranged in a specific pattern, and by selectively turning on or off these segments, various numbers and characters can be displayed. Each segment represents a specific part of the digit, and when all segments are illuminated in different combinations, they form the numbers 0 through 9 and sometimes a few additional characters like A, B, C, etc.

7-segment displays are commonly used in various applications, including digital clocks, calculators, digital meters, and even some simple electronic devices. They can be used to display numeric values, such as time, temperature, or any other information that can be represented with digits.

Seven(7) Segment Display Pinout

Here, you can see the terminal identification or pinout diagram of a 7-segment display.

Generally, a seven-segment display consists of 10 Pins or 10 terminals. The segments of a 7-segment display are usually labeled A, B, C, D, E, F, and G. It also has an additional indication that is DP(decimal point). So, 8 pins are used for these seven segments and the DP, while the other 2 pins are used as common.

There are two main types of 7-segment displays - common anode and common cathode.

Common Anode 7-segment display

In this type, all the anodes of the LED segments are connected together, while each cathode is separately controlled to turn on or off a segment. To display a segment, you need to apply a HIGH voltage to its common anode terminals and a LOW voltage (0V) to its corresponding cathode.

Common Cathode 7-segment display

Here, all the cathodes of the LED segments are connected together, and each anode is controlled to light up a segment. To display a segment, you need to apply a LOW voltage to its common cathode terminals and a HIGH voltage (typically 5V) to its corresponding anode.

7-Segment Display Circuit Diagram

Here, you can see the Internal Circuit Diagram of a 7-Segment Display.

Here, you can see the circuit diagram for both Common Anode and Common Cathode Displays.

As you can see in the Common Anode seven-segment display, all the anodes of the LED segments are connected together, while each cathode is separately kept to control to turn on or off a segment.

And, in the Common Cathode seven-segment display, all the cathodes of the LED segments are connected together, and each anode is separately kept to control to light up a segment.

How to identify 7-Segment Display Terminals?

The segment pins are labeled with letters A to G, representing each of the individual LED segments. The Decimal Point pin may be labeled as DP. The Common terminals may be identified as Comm. When you are working with a new 7-segment display, you can find information about its pinout in the manufacturer's datasheet or documentation. The datasheet will provide a diagram and description of the pin arrangement, making it easy to identify which terminal is associated with each segment, the common terminal, and the decimal point (if applicable).

Read Also: 

• 7-Segment Display Connection (Common Anode & Common Cathode)
• 2-Digit, 3-Digit, and 4-Digit(12 Pin) 7-Segment Display Pinout
• What is Rocker Switch? Wiring and Connection Diagram
• What is SPDT Switch? Single Pole Double Throw
• What is DPST Switch? Double Pole Single Throw Switch

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