Well, a picture of my circuitry, anyhow, there in the upper-right corner:
It’s the avalanche noise random number generator:
I’m pretty sure they color-negatived it to suppress that retina-burn magenta PETG holder.
It wasn’t for my column, but the Tinny cover painting for Circuit Cellar Issue 29 (“Measurement and Control”) hangs near my desk:
Back then, I was writing the Firmware Furnace column. Ah, those were the days…