Authorized calculators list
| Companies | Models |
|---|---|
| Hewlett Packard | HP 20S, HP 30S, HP 32S2, HP 33S, HP 35S |
| Texas Instrument | TI-30Xa, TI-30XIIB, TI-30XIIS, TI-36X***, BA35 |
| Sharp | EL-531*, EL-535-W535, EL-546*, EL-510 R, EL-516** EL-520* |
| Casio | FX-260, FX300 MS, FX-350 MS, FX-300W plus, FX-991MS, FX-991ES, FX-991W**, FX-991ES Plus C** |