Reckon is a replacement calculator for the Casio fx-9860g calculator.

 

Some reasons to use Reckon are:

·         Real-time Graphing

·         High accuracy

·         Complex numbers

·         Matrices

·         Large integers & Rationals

·         Unit Conversions

·         RPN and ALG entry formats.

·         It's free!

To Install Reckon download the add-in application RECKON.G1A and install it using the Casio FA-124 installation tool.

Download the pdf user manual here.

The current version is 1.17. New versions will be posted to this page.