#calculators — Public Fediverse posts

i could not resist picking up this ridiculous thing at the dollar store

#calculators

I feel bad for Jan Łukasiewicz, whose mathematical notation was so important that we still use it today, but because English speakers couldn't pronounce his name, instead of it being named after him it's just "Polish notation" and its successor, "Reverse Polish notation". They could have at least called it Jan notation you'd think? #RPN #calculators #maths #mathematics

one of my little side hobbies is rescuing dead graphing calculators at thrift shops

i found this TI-83 completely dead with 25+ year old leaking batteries inside of the bay, and brought it home for $8.

after a little cleanup of the battery bay and contacts with a weak acid, it sprung back to life for the first time in decades. amazingly, the original owner's programs were still intact, thanks to the backup battery.

per every canadian math teacher's instruction, the original owner - Fraser D. - had his name engraved into the shell. 😀

this calculator is destined to go back into use as soon as i can find a local math teacher who wants it in their classroom. given that a TI-84 calculator is still $190 in canada - a truly disgusting price for a computer running a 40-year-old Zilog Z80 processor (!), a free TI-83 will sound good to some kid out there.

(whom, i hope, will spend all of their Math 10 time learning how to program TI-BASIC instead of solving polynomials)

#permacomputing #calculators #retrocomputing #yeg

MITS: Rockets, Calculators, and Personal Computers

https://www.abortretry.fail/p/micro-instrumentation-and-telemetry

Comments: https://news.ycombinator.com/item?id=48892273

#HackerNews #MITS #Rockets #Calculators #PersonalComputers #TechHistory

The internet doesn't need more complicated tools.

It needs tools that are fast, transparent, and actually explain the results.

That's the idea behind **CalcMora**.

We build free calculators across finance, health, everyday life, date & time, conversions, and even fun & fantasy topics.

If there's a calculator you'd like to see, we'd genuinely love to hear your ideas.

🌐 https://calcmora.com/

#IndieWeb #Mastodon #Productivity #WebTools #OpenSourceCommunity #BuildInPublic #Calculators

ooo look at this calculator!

from 2007 apparently. image from this kijiji listing: https://www.kijiji.ca/v-general-electronics/city-of-toronto/rare-lexon-roswell-calculator-2007/1728864874

#calculator #calculators

Hands with Busts of Apostles, Saints, Mary, and Christ (1491), from Schatzbehalter der wahren Reichtumer des Heils
.

Source: The Walters Art Museum

https://pdimagearchive.org/images/aa00b387-202c-42e5-a975-62fb4a8c7bac

#hands #fingers #books #memory #calculators #symbolism #fingernails #art #publicdomain

New-to-me, from TechBook: Over 5,000 Calculators! Inside Germany’s Most Unusual Tech Collection. “‘I received my first pocket calculator as a gift from my father,’ recalls Gerhard Wenzel from Solingen. ‘It was a device from Quelle’s own brand, Privileg, an 872 MD.’ Naturally, the first item in his collection is also featured in his online collection.” This is clearly a very old site and […]

Casio S100X Japanese Lacquer Edition (JP Page Only)

https://www.casio.com/jp/basic-calculators/premium/en-s100x-jc1-u/

#HackerNews #Casio #S100X #Japanese #Lacquer #Edition #Calculators #Premium #Tech #Gadgets #Japan

🎉 Wow, who knew the history of #microcomputers was just a parade of unpronounceable names and numbers? 😴 Let's not pretend anyone's life changed with a 20-pound "micro" computer, probably better at launching a spaceship than solving a math problem. 🚀 #Calculators everywhere are shaking in their pocket protectors. 📟
https://www.righto.com/2024/02/the-first-microcomputer-transfluxor.html #techhistory #nostalgia #spacecomputing #HackerNews #ngated

AI Today, Calculators Back in the Day

An article about the dangers of AI dependency reminded me of how I encouraged a middle schooler to do algebra by hand in my senior year of high school.

https://thenewleafjournal.com/ai-today-calculators-back-in-the-day/

#AI #Calculators #GraphingCalculators #TI89 #Anecdotes

https://arxiv.org/pdf/2603.21852 This is interesting! All functions on a scientific calculator can be reduced to just '1' and this dyadic function 'EML'. @NanoRaptor If you ever felt like creating an HP voyager calculator with a very limited number of buttons... I think we could get away with just '1' 'EML', roll down and x<>y. Maybe on. And the most important one '%'. :) #calculators #rpn

Symbol of Combinatorics (1666) by Gottfried Wilhelm Leibniz, from Dissertatio de Arte Combinatoria.

Source: Deutsche Fotothek / Wikimedia Commons

https://pdimagearchive.org/images/b8d128f2-e9a0-4a5d-8a92-d810b83ba366

#diagrams #leibniz #language #calculators #computation #elements #circular #art #publicdomain

New calculators for worldbuilders' convenience just dropped on my website. Check them out...

Mass+radius > gravity and density: https://www.adamasnemesis.com/planetary-density-and-surface-gravity-calculator/

Primary mass > masses of moons scaled to known examples: https://www.adamasnemesis.com/planetary-moon-mass-calculator/

Painting is "Astronomy" by John Sant.

#worldbuilding #calculators #blog #blogger #blogging #website #tools #toolkit #brainstorming

I don't remember these exercises in Algebra 101

https://piefed.social/c/noncredibledefense/p/1965339/i-don-t-remember-these-exercises-in-algebra-101

Quanta Magazine 🤓 wonders if digital proofs are the end of rigorous math as we know it. Maybe next week they'll tackle whether #calculators are ruining the joys of long division. 📉🔢
https://www.quantamagazine.org/in-math-rigor-is-vital-but-are-digitized-proofs-taking-it-too-far-20260325/ #QuantaMagazine #digitalProofs #rigorousMath #longDivision #HackerNews #ngated

This week in #FDroid (TWIF) is live:

* #calculators can't calculate
* #DeltaChat #ArcaneChat care about #metadata
* #Fennec Firefox has a notification
* #FMD and much #UnifiedPush news
* #FreeOTPplus long awaited update
* #Saracroche 1 year old
* #Schildichat back on track
* #Weblibre Firefox tricks
+ 17 new apps
& 190 updates
- two archived

Two plus two equals whatever: https://f-droid.org/2026/03/27/twif.html

The Story of the Hunor 301: A 1977 Calculator Ahead of Its Time

https://janosiimre.wordpress.com/2026/03/21/the-story-of-the-hunor-301-a-1977-calculator-ahead-of-its-time/

Drugwars for the TI-82/83/83 Calculators

https://gist.github.com/mattmanning/1002653/b7a1e88479a10eaae3bd5298b8b2c86e16fb4404

#HackerNews #Drugwars #TI82 #TI83 #Calculators #RetroGaming #Python

@NoveltyBot
Still got mine. Still works.
1979 is a VERY late date to still be selling these. I was already on my 3rd or 4th electronic calculator by then!
#calculator #calculators
#1960s #1970s #nostalgia #maths #history #retrocomputing

@k8vsy
High end calculators should have a boss key.
#maths #calculators

A friend asked me recently which of my calculators is my favorite. My answer was not that great. In order to answer this properly I would have to provide so many details that it would become difficult to follow. So I wrote a blog post about it that people can read at their own pace.

https://nickapos.oncrete.uk/2025/12/09/which-calculator-is-your-favorite.html


#calculators #math