Скачать или смотреть R47 Calculator Introduction (Updated)

The R47 is a powerful, RPN-based programmable scientific calculator with an extensive feature set. Its software has been refined over many years, born from the vision of a dream calculator developed by a team of engineers and mathematicians, all dedicated calculator enthusiasts.

The hardware is by SwissMicros, the firmware is open source and provided by the developers.

The C47/R47 firmware originated as a fork of the WP43 project, itself derived from the WP34S. A core component carried through this lineage is the decNumber library by Mike Cowlishaw, also used in GCC for precise decimal arithmetic.

Inspired by the HP‑41C and HP‑42S, the R47 has a keypad featuring two shift keys, preserving a familiar feel while being entirely new in execution.

For a quick demo of the handling of 1000 digit integers, see this short:
   • R47 Calculator (thousand digit integers)  

(Description derived from swissmicros.com/product/model-r47)

(Video by Barry Mead, as posted at forum.swissmicros.com/viewtopic.php?t=4605, reuploaded with permission)

A previous version of this introduction can be found here:
   • R47 Calculator Introduction