DIY
👽
Dr. Frankenstein
Have a custom major chip on a PCB (RAM/Flash/ASIC swapped etc.)
Quantity
✌️
Twice as many as most people!
Own at least 2 calculators... it's a start!
Localization
🇫🇷
Bonjour !
Own a France-specific calculator (76.fr, 82 Stats.fr, 82+, 83+.fr, 84 Pocket.fr, 82A, 83PCE, French Casios, French brands…)