Show threadJan SchieferFeb 7
@cheeldcharles I think I am good, I have a lifetime supply. But for new RPN calculators, #swissmicros is where it is at. I have a DM15L which is great, and seriously tempted by the DM32.
Show threadLeif SamuelssonJan 7

@cgervasi

#SwissMicros

https://www.swissmicros.com/products

SwissMicros - Product Line

Explore RPN Calculators

Show threadStefan Wolfrum Nov 19
@RFDave What are your clues regarding a #SwissMicros DM51 model? ๐Ÿ˜ณ Was there ever any talk/speculation about it?
Stefan Wolfrum Nov 19
Made a little video with a speed comparison between the (old) #DM42 running the #C47 firmware and the new #R47 hardware #calculator from #SwissMicros. ๐Ÿ‘‰ https://youtu.be/BZqVe10dhRc?si=PJIPC-fijwFeF_UL โ€“ The R47 (which is, in fact, a DM42n hardware under the hood) is pretty much exactly three times faster โ€“ at least in this little, single use case of #primefactorization. #math
R47 vs. DM42/C47

YouTube
Stefan Wolfrum Nov 18

Wie krass โ€ฆ Frรผher habe ich bei neuen Taschenrechnern mit Fakultรคt Funktion immer gleich geschaut, bis zu welchem maximalen Argument das Ergebnis noch berechnet werden kann.

Bei einfachen Rechnern ist das 69 und 69! wird als 1,711224*10^98 angezeigt. Der Exponent reicht da eben nur bis 99 und 70! hat im Exponenten schon 100.

Nicht so beim #SwissMicros #R47! Da kann man sich nicht nur ALLE Ziffern von 69! anschauen, er kann Fakultรคt bis 2123 als Argument! Letzte Zahl im zweiten Screenshot. ๐Ÿคฏ

Show threadStefan Wolfrum Nov 18
@JakeSparkleChicken Yes, thank you, I think so, too. ๐Ÿ˜Š Itโ€™s so vastly complex and stuffed full of functionality โ€“ will take a long time to learn everything! #C47 #R47 #SwissMicros #calculator
Show threadAxel HartmannNov 17
@mrdoornbos - intrigued - don't see that on their website. Are there any plans to go for a HP48 S/SX/G/GX clone/upgrade #SwissMicros version?
Stefan Wolfrum Nov 17
It finally arrived! The brand new #SwissMicros #R47 #calculator! Finally USB-C and the famous & incredibly powerful #C47 firmware in a real hardware calc! Connecting to an iPad and accessing files (like screenshots) works flawlessly. ๐ŸŽ‰๐Ÿพ๐Ÿฅณ๐Ÿ’ƒ๐Ÿ•บ Can your pocket (!) calculator compute the factorial of 2123? The result is in the photo & screenshot at stack level 4 (T register), a number with exponent *10^6143. ๐Ÿคฏ
Hacker NewsNov 11

The R47: A new physical RPN calculator released today in 2025

https://www.swissmicros.com/product/model-r47

#HackerNews #RPNcalculator #newrelease #2025 #techinnovation #SwissMicros #calculatorenthusiasts

SwissMicros Model R47 RPN Calculator

Jason WeatherlyJul 16, 2025

Hrmm, writing small programs isn't too difficult once you know where the functions are, but I don't know how to make them easily accessible which would be nice via the menuing system. Also, the documentation for the `db48x` firmware kinda stops at the programming section.

#calculator #swissmicros #hp42 #programming