HP-29C - Brighter LEDs?

[teenix]

I don't know for sure, but the 29C has a direct output from the power supply into the Anode driver, where as the 25C has a 56 ohm resistor in series, so it might be brighter for this reason, or because the display modules have different part numbers, or both.

The HP-21 shows same display module as the 25C but with the same direct connection to power supply. Not sure how this brightness compares.

These 3 models have different anode drivers for the display as well.

cheers

Tony