7-Segment Display Decoder Tool

Convert decimal digits into 7-segment display patterns. Enter a digit from 0 to 9 and see the activated LED segments with the complete segment code.

Decimal Digit


Segments ON: -



7-Segment Code: -



Status: -

What is a 7-Segment Display?

A 7-segment display is an electronic display device made using seven individual LED segments. By switching different segments ON or OFF, it can display decimal numbers from 0 to 9.

The seven segments are labelled as: a, b, c, d, e, f, and g.

        a

     -------

  f |       | b

     ---g---

  e |       | c

     -------

        d

How Does a 7-Segment Decoder Work?

A 7-segment decoder converts a digital input into signals that control each LED segment. Every number has a unique combination of active segments.

The input decimal digit is received.
The decoder checks the matching segment pattern.
The required LED segments are activated.

Example:

Digit: 8


Segments ON:

a b c d e f g


Code:

1111111

7-Segment Display Digit Table

Digit	Segments ON	Code
0	a b c d e f	1111110
1	b c	0110000
2	a b d e g	1101101
3	a b c d g	1111001
4	b c f g	0110011
5	a c d f g	1011011
6	a c d e f g	1011111
7	a b c	1110000
8	a b c d e f g	1111111
9	a b c d f g	1111011

Applications of 7-Segment Displays

Digital clocks and timers

Electronic calculators

Digital meters

Industrial control panels

Frequently Asked Questions

A 7-segment decoder converts digital input values into signals that control the LED segments required to display a number.

A standard 7-segment display contains seven segments named a, b, c, d, e, f, and g.

A standard display can show decimal digits from 0 to 9 using different LED segment combinations.

They are commonly used in digital clocks, calculators, electronic meters, counters, and embedded electronics projects.