He also described a binary calculator using marbles. From De progressione Dyadica: This [binary] calculus could be implemented by a machine (without wheels)… provided with holes in such a way ...

or MATH 2000 (brief calculus). The TI-83 (not Plus), TI-86, TI-92 and the TI-92 Plus are no longer manufactured. Certainly these older calculators may still be used in courses allowing any calculator.

Tired of juggling between Apple Notes and Calculator? A math feature in iOS 18 lets you solve equations instantly with just a ...

Why it matters: Casio has introduced a modern version of its iconic calculator watch, itself based on the Casio Mini personal calculator first released in the early 70s. The new creation is a ...