AN234, figure 11
http://ww1.microchip.com/downloads/e...tes/00234a.pdf

Name: AN234 fig 11.jpg Views: 3116 Size: 91.4 KB

This is the technique I meant by blinking the LEDs in sequence (multiplexing right?).

- Let's say a complete 7-segment LED consumes 20mA.
- If I turn Q1 on/off, then Q2 on/off, and so on, really fast.

Wouldn't it only consume 20mA since only one 7-segment is lit at one time?

The human eye would see them as all on, no? Kind of like screen refresh rates.

Robert