La HP-46 c'est le cloud des années 70… en rouleau papier. #HP-46 #RetroTech
La #HP-46 de 1973 : calculatrice scientifique + imprimante intégrée.
Chaque opération devient un ticket papier.
Le “journal d’activité” avant les logs… et avec du bruit. 😄🧾
A lire : www.silicium.org/index.php/bl...
#RetroComputing #VintageTech #RPN
RPN - rätt sätt att räkna på.
Joachim Klahr använder omvänd polsk notation i sitt programmeringsspråk Quadrate, och insåg att han räknat på ett sämre sätt hela livet.
Ett utdrag ur Kodsnack 690 - lyssna där poddar finns eller på kodsnack.se
#podcast #rpn #quadrate #hpCalculators #ti83
"All Hewlett-Packard pocket calculators feature RPN logic- the most sensible logic system a pocket calculator can have!" Illustration of HP's four-level stack system.
"If you will look at the keyboard of any HP calculator shown in this catalog, you will see that none has an "=" key. Nor are there any keys for parentheses. None are needed. Instead, all HP calculators have a key like this: ENTER. Thanks to this key, and RPN logic, you get four major advantages you don't get with most other calculators." Short explanation of RPN by HP, 1975.
"All Hewlett-Packard pocket calculators feature RPN logic- the most sensible logic system a pocket calculator can have!"
This beautiful short introduction to #RPN (Reverse Polish Notation) is from Hewlett-Packard's Pocket Calculator Buyer's Guide printed in 1975.
www.swissmicros.com/product/mode...
#SwissMicros' R47 is a new RPN-based programmable scientific calculator.
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 #RPN enthusiasts.
MINUTEMAN * 6X, an RPN calculator introduced by Commodore in 1974.
Display of the MINUTEMAN * 6X, an RPN calculator introduced by Commodore in 1974.
Back of the MINUTEMAN * 6X, an RPN calculator introduced by Commodore in 1974.
The MINUTEMAN * 6X was an early calculator by #Commodore from 1974, the company that was later famous for legendary computers like the Commodore 64 and the #Amiga family. The #MINUTEMAN supported #RPN (reverse Polish notation), had a 2-level stack and arithmetics for integers and currency values.
bsky.app/profile/did:...
better-experience.blogspot.com/2026/01/the-...
#RPN #NEWSWATCH #JUNIOR #EDITION
multi-search-tag-explorer.headlines-world.com/advanced-sea...
2026 IN #SUMO
aepiot.ro/advanced-sea...
headlines-world.com
🔬 Want to get involved in #nursing #research?
WeRPN regularly shares #RPN-focused #studies approved by our Research Advisory Council.
Studies are being added frequently, so check out the partnership and recruitment page to get involved!
👉 https://loom.ly/vwBNfbI
Seen compassion turn into action? Honour the nurse who raised the standard of care and consistently delivers excellence in nursing.
Nominate a nurse today - Click the link: 🔗 https://loom.ly/LmjSREc
Deadline: 📅 Feb 20, 2026
#nurse #nursing #awards #RPN #RN
macOSではプリインストールの「計算機」がRPNモードを備えています。また、App StoreにあるRPN Anywhereも使いやすい(150円)。
Androidアプリはたくさんあって、私はハードのHP-42Sを使っていたこともあってFree42をよく使います。
#RPN
いまでもRPN電卓ソフトを作っている方がいるんですね ＜BT
私は四則演算用の電卓を自作して使っています（もう5年になるのか、現役です） /
200LXのキーを使ったRPN電卓、リベンジ編: パドラッパ - https://pado.tea-nifty.com/top/2021/01/post-385fec.html
#fedibird #RPN
I'm out of touch in that only last year I learned that #HP calculators are no longer produced. I still use my #33S, but but if I want to replace it, I need to buy one on E-Bay. Apparently handheld calculators with buttons and #RPN are thing of the past. Time flies.
Give me my HP #RPN calculator.
🔬 Want to get involved in #nursing #research?
WeRPN regularly shares #RPN-focused #studies approved by our Research Advisory Council.
Studies are being added frequently, so check out the partnership and recruitment page to get involved!
👉 https://loom.ly/vwBNfbI
加減と乗除で入力方式が異なるってのは、どうなのかね。長い数式に成ると入力ミスの温床に成りそう。っていうか、どうせ統一性が無いのなら、 #RPN にすれば良かったような。RPNなら統一性を持たせられただろうし、少資源で、より高度な計算も可能だったろうに。 #リレー式計算機 #14-A > www.youtube.com/watch?v=tdxJ...
🔬 Want to get involved in #nursing #research?
WeRPN regularly shares #RPN-focused #studies approved by our Research Advisory Council.
Studies are being added frequently, so check out the partnership and recruitment page to get involved!
👉 https://loom.ly/vwBNfbI
There is now a one-stop-shop to access the statefiles I develop for the #DM32 calculator by #SwissMicros. There's a cool astrodynamics statefile and one that provides HP12c date functions to the calculator a,ready up. Head over to GitHub and check it out! #RPN github.com/jacober-calc...
You can now follow the statefile structures that I keep on my own #DM32 as well as the OFFIMGs. I'll update this repo as I make changes on my own device and work on developing new tools for the #RPN calculator. #SwissMicros github.com/jacober-calc...
I've been updating my repos and files on GitHub. Be sure to check out my account over there for the most up to date DM32 resources. #DM32 #SwissMicros #RPN github.com/jacober-calc
#Discover #News #📰News #Nurses #Nursing #NursingCareer #Hospitals #RPN #NursingDegrees #ProfessionalCareer #Profession #Professional #College
WTF???
www.yahoo.com/news/article...
Like all TRURL apps, TRURL B supports and is based on #RPN, i.e., Reverse Polish Notation.
#Macintosh の #テンキー とは、微妙に配置が異なるような…。っていうか、 #Mac のテンキーって[ = ]キーが有るのね。逆に、 #Windows はテンキーに[ = ]無いんだから #rpn にすりゃ、便利だったのに。っていうか、 #101キーボード のテンキーって、rpnを意識した配置だと思うが。
photo of the R47 calculator IRL
R47 officially goes on sale, early bird discount available here: https://47calc.com/ #calculators @calculators #rpn #hp
🔬 Want to get involved in #nursing #research?
WeRPN regularly shares #RPN-focused #studies approved by our Research Advisory Council.
Studies are being added frequently, so check out the partnership and recruitment page to get involved!
👉 https://loom.ly/vwBNfbI
Moravia (the current owner of the HP calculator IP) has announced they'll be making a Collector's Edition of the 16C RPN programmer's calculator next year:
https://youtu.be/vwgQu2s7rxY?t=1185
HP made dozens of scientific and business calculators over the years, but they only ever made one […]
Courtesy of Eric Rechlin of hpcalc.org, now you can watch a fat ugly guy who says "um" far too often, at HHC 2025 talking about and demonstrating the forthcoming Nonpareil II microcode-level simulation of various HP RPN calculators (currently HP-15C and HP-16C) […]
Screenshot of the Lazarus IDE with TRURL's RPN engine and a test app using this library and FPCUnit.
The RPN engine of the #TRURL project has been released in version 1.2 (Gimel). This new version introduces a square function for your calculator apps.
#RPN #Reverse_Polish_Notation #Pascal programming.
trurl.sourceforge.io
doi.org/10.5281/zeno...
doi.org/10.5281/zeno...
🔬 Want to get involved in #nursing #research?
WeRPN regularly shares #RPN-focused #studies approved by our Research Advisory Council. Current highlights include:
Staffing standards in LTC 🏥
Racial microaggressions & retention 👩🏽⚕️
New student studies coming soon!
👉 https://loom.ly/vwBNfbI
At HHC 2025, I learned of the existence of another HP-95C in private hands, which makes four that I know of.
The HP-95C was a desktop scientific programmable printing calculator, with continuous (CMOS) memory but no card reader. It would have been introduced in 1976, positioned between the […]
