- on Miscellaneous Electronics
- Published in issue 7/2012 on page 90
Economical 7-segment Display
Current consumption is always an important consideration when designing battery-powered devices. This circuit shows how a seven-segment display can be driven by a microcontroller in a way ideally suited for such applications. Furthermore, we even economise on component count!
In a conventional circuit where a single digit is displayed each individual segment is provided with its own current-limiting resistor through which it can be continuously driven.