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.
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.