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.

The watches' calculator function can add, subtract, multiply, and divide up to eight digits. As for watch functions, you get ...

Now picture that device being designed by a prisoner in a German Nazi concentration camp during World War II, with few ...

Apple's Calculator app does more than help you calculate tips. With the latest OSes, it launches on iPad and lets you create ...

You can then access your Math Notes from the Calculator app by tapping the calculator icon and selecting Math Notes. From the list of notes, tap the one you want to view. If you have an Apple ...