He also described a binary calculator using marbles. From De progressione Dyadica: This [binary] calculus could be implemented ... machine using the same basic mechanism. It took a few years ...

Microsoft Excel is a powerful spreadsheet program that can be used for a variety of tasks, including basic math. Here's how ...

from basic to pre-calculus. If you want a similar alternative for Windows 11/10, try Red Crab. While several new functions and modes have been added in the Windows Calculator – Standard ...