#calculator — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #calculator, aggregated by home.social.
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My old TI 84 #calculator got a new case and a new life! It now has a real #keyboard !
I killed sooo many LEDs during the soldering but fortunately @fesix helped me fixing all my stupidities! -
#ReleaseThursday Happy to announce that https://thi.ng/units finally has a little CLI wrapper to perform not only simple unit conversions, but also more advanced calculations, using the existing Lisp-like S-expression based DSL and built-in units and constants.
https://docs.thi.ng/umbrella/units/#cli-usage
The CLI also provides a
listcommand to print out the 172 built-in units, their canonical symbol, any aliases and full names. The output can also be filtered via optional regexp pattern. See attached readme screenshots & more advanced linked example:https://mastodon.thi.ng/@toxi/116043223284662742
Hope some of you find this as useful as I do! Any questions, please ask!
#ThingUmbrella #UnitConversion #CLI #Calculator #TypeScript #Lisp #DSL #OpenSource
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#ReleaseThursday Happy to announce that https://thi.ng/units finally has a little CLI wrapper to perform not only simple unit conversions, but also more advanced calculations, using the existing Lisp-like S-expression based DSL and built-in units and constants.
https://docs.thi.ng/umbrella/units/#cli-usage
The CLI also provides a
listcommand to print out the 172 built-in units, their canonical symbol, any aliases and full names. The output can also be filtered via optional regexp pattern. See attached readme screenshots & more advanced linked example:https://mastodon.thi.ng/@toxi/116043223284662742
Hope some of you find this as useful as I do! Any questions, please ask!
#ThingUmbrella #UnitConversion #CLI #Calculator #TypeScript #Lisp #DSL #OpenSource
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#ReleaseThursday Happy to announce that https://thi.ng/units finally has a little CLI wrapper to perform not only simple unit conversions, but also more advanced calculations, using the existing Lisp-like S-expression based DSL and built-in units and constants.
https://docs.thi.ng/umbrella/units/#cli-usage
The CLI also provides a
listcommand to print out the 172 built-in units, their canonical symbol, any aliases and full names. The output can also be filtered via optional regexp pattern. See attached readme screenshots & more advanced linked example:https://mastodon.thi.ng/@toxi/116043223284662742
Hope some of you find this as useful as I do! Any questions, please ask!
#ThingUmbrella #UnitConversion #CLI #Calculator #TypeScript #Lisp #DSL #OpenSource
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#ReleaseThursday Happy to announce that https://thi.ng/units finally has a little CLI wrapper to perform not only simple unit conversions, but also more advanced calculations, using the existing Lisp-like S-expression based DSL and built-in units and constants.
https://docs.thi.ng/umbrella/units/#cli-usage
The CLI also provides a
listcommand to print out the 172 built-in units, their canonical symbol, any aliases and full names. The output can also be filtered via optional regexp pattern. See attached readme screenshots & more advanced linked example:https://mastodon.thi.ng/@toxi/116043223284662742
Hope some of you find this as useful as I do! Any questions, please ask!
#ThingUmbrella #UnitConversion #CLI #Calculator #TypeScript #Lisp #DSL #OpenSource
-
#ReleaseThursday Happy to announce that https://thi.ng/units finally has a little CLI wrapper to perform not only simple unit conversions, but also more advanced calculations, using the existing Lisp-like S-expression based DSL and built-in units and constants.
https://docs.thi.ng/umbrella/units/#cli-usage
The CLI also provides a
listcommand to print out the 172 built-in units, their canonical symbol, any aliases and full names. The output can also be filtered via optional regexp pattern. See attached readme screenshots & more advanced linked example:https://mastodon.thi.ng/@toxi/116043223284662742
Hope some of you find this as useful as I do! Any questions, please ask!
#ThingUmbrella #UnitConversion #CLI #Calculator #TypeScript #Lisp #DSL #OpenSource
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Build The CPU, Then Build The Calculator
https://fed.brid.gy/r/https://hackaday.com/2026/05/13/build-the-cpu-then-build-the-calculator/
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Build The CPU, Then Build The Calculator
https://fed.brid.gy/r/https://hackaday.com/2026/05/13/build-the-cpu-then-build-the-calculator/
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🚫 Oh, look! An #exclusive #calculator that you're *not* allowed to see. Casio's grand showcase of "Access Denied" is the height of modern digital elitism. 🎉 Because nothing screams premium more than a website that's as locked down as Fort Knox. 🔒
https://www.casio.com/jp/basic-calculators/premium/en-s100x-jc1-u/ #AccessDenied #DigitalElitism #Casio #ModernTech #FortKnox #HackerNews #ngated -
This was pretty wild. A prototype HP-18C calculator with snazzy clear plastics.
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Recent thrift store find, an Olivetti CBC-80 chequebook #calculator. I've ignored similar devices in the past as uninteresting but this one grabbed me. Maybe the 80s styling, or maybe because it's obviously a #Canadian edition, with English/French labelling and the correct spelling of "chequebook". Need to find a manual though, haven't yet figured out how to use the cheque balance functions.
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Let's be honest, I'll never be able to afford one of those handmade Japanese lacquerware Casio calculators. (Sigh) But I was able to get this gorgeous Casio Mini CM-602 from 1973 for $26! Look at that beautiful VFD! It also has a feature I've never seen before, hardware selectable precision. You can flip that switch on top to decide if you want zero or two decimal places. Very cool! #casio #calculator #retrocomputing
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wtf #apple. #Calculator in the spotlight search does not work correctly. Note that I added parenthesis because it have not worked without them either 🤣
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My new #pocketCalculator
(I have to use a pen as a stylus to push the beads most of the time because it's all tiny)
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My new #pocketCalculator
(I have to use a pen as a stylus to push the beads most of the time because it's all tiny)
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I made a calculator that works over disjoint sets of intervals
https://victorpoughon.github.io/interval-calculator/
#HackerNews #calculator #disjointsets #intervals #coding #mathtech
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Added, updated & simplified the growing collection of darkroom-related calculators and super happy how elegant and concise the code has turned out, making it super easy to add more of them in the future.
I think it's also another great, if minimal, example to illustrate how otherwise completely separate https://thi.ng/umbrella packages can seamlessly compose/combine to enable a reactive dataflow UI, all without the need for any virtual DOMs and/or completely over-the-top frameworks like React & co. It's also doing so via mostly JS-native data structures for declaring the UI (plain objects/arrays/iterables) and various constructs directly managing the reactive value streams, thus providing a lot more finegrained control over UI updates/timing/throttling). Any value changes done by the user only trigger specific, pin-point calculations which then result in equally specific UI updates to show new results. Any user action only ever triggers the minimum amount of work needed to reflect the new state.
Calculators:
https://demo.thi.ng/umbrella/darkroom-calc/Source code:
https://codeberg.org/thi.ng/umbrella/src/branch/develop/examples/darkroom-calc/srcThe attached images show the source code of the entire main app (UI root) and one of the calculators...
Ps. Please let me know if you'd like to see more of these posts in the future. I'm tempted to launch season 2 of #HowToThing (see link below for 30 previous mini projects/tutorials) — but since this is very time consuming to produce & document these projects/examples, and because there has been _very little feedback_ to these previous projects/posts, I first need to gauge interest... Thank you! 🫶
https://codeberg.org/thi.ng/umbrella#howtothing
#ThingUmbrella #Darkroom #Calculator #Tool #Reactive #UI #WebDev #TypeScript #JavaScript #OpenSource
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I had a someone come into the office from one of our suppliers this morning. Whilst she was there she saw a printing calculator in a display cabinet and really couldn't understand what it was.
I remember seeing and using them back in the 1980s. I'm really getting too old!
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Qalculate! 5.10 è disponibile: più preciso, più ricco di unità, migliore con intervalli e con tante correzioni utili. #LinuxEasy #Qalculate #Calculator #Software #Linux #Windows
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POKÉMON POKOPIA PLAYERS CONSTRUCT WORKING CALCULATORS, EXTENDING GAME'S FUNCTIONALITY
Pokopia players are building working calculators with in-game tools, showing the game's deep crafting options. See how this changes gameplay.
#Pokopia, #Pokemon, #Gaming, #Calculator, #Switch2
https://newsletter.tf/pokopia-players-build-working-calculators/
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Players in Pokopia are building working calculators, similar to how players used redstone in Minecraft to create complex machines.
#Pokopia, #Pokemon, #Gaming, #Calculator, #Switch2
https://newsletter.tf/pokopia-players-build-working-calculators/ -
Happy International Pocket Calculator Day, everyone! #pocketcalculator #pocketcalculatorday #calculator 🧮 https://www.kuriose-feiertage.de/internationaler-tag-des-taschenrechners/
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Started creating browser-based calculators for quickly computing a bunch of recurring things in darkroom processing, so far:
Scale amount by area:
Given reference dimensions and amount, compute scaled amount needed for new target dimensions.
Example: Compute drops of emulsion needed for a new print sizeTwo-part solution ratio:
For a total volume of a two-part solution with a A:B target mix ratio, compute how many units are needed of both A and B.
Example: For N drops in total, compute how many drops are needed for A & B using a 1.2:1 target ratioSolution addition:
Compute the amount of solution A (with given concentration) to add to another volume to achieve a certain target concentration (for solution A)
Example: How many extra drops of a 25% contrast agent solution are needed to achieve a 5% solution with a certain base emulsion volumeMore calculators forthcoming... Feel free to ping me with any other useful formulas you'd like to have added...
Bookmark this on your phone:
https://demo.thi.ng/umbrella/darkroom-calc/(The UI is responsive to the system's dark mode setting)
Source code:
https://codeberg.org/thi.ng/umbrella/src/branch/develop/examples/darkroom-calc/Btw. This is https://thi.ng/umbrella example project #186 and relies mostly on these packages:
- https://thi.ng/rdom & https://thi.ng/rstream for reactive UI & computation
- https://thi.ng/rdom-forms for reactive form element abstraction/creation#ThingUmbrella #AltProcess #Darkroom #DarkroomPrint #AnalogPhotography #Calculator #Reactive #UI #TypeScript
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Me: I've been feeling pretty good lately. I'm strong, I don't need to buy any more calculators.
Casio: Oh really?
#casio #calculator -
An iPhone-styled ad for the special Casio calculator in 2026
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🎉 Behold, the ZGC4—a #calculator that promises to revolutionize math class by shipping fast and not costing your entire college fund. 🤔 With cutting-edge features like *existing* technology and zero subscriptions (gasp!), it's the same old graphing calculator in a shiny new wrapper. 📈 Let's all pretend "fast graphing" is the innovation of the century. 🚀
https://www.zerocalculators.com/features #ZGC4 #MathRevolution #FastGraphing #AffordableTech #EdTech #HackerNews #ngated -
It's Christmas for me today! I received three QMTECH FPGA boards, and a pair of Baofeng UV-5R dual-band HTs. Also new sunglasses, a TI BA-45 handheld printing financial calculator, and another TI Programmable 59 calculator with PC-100A printer.
#fpga #amateurradio #hamradio #retrocomputimg #calculator -
Ah, yes, because nothing screams cutting-edge #tech like resurrecting a #90s #calculator game to relive your middle school #nostalgia 🤓. Forget solving world hunger; let's calculate virtual profits from imaginary drug trades on a device that can barely display more than 8 pixels at a time! 🙄👾
https://gist.github.com/mattmanning/1002653/b7a1e88479a10eaae3bd5298b8b2c86e16fb4404 #retro #gaming #games #revival #HackerNews #ngated -
I know I'm late to.the party, but:
TIL about the Texas Instruments PC-100, 100A, 100B, 100C printers for use with the TI SR-52, SR-56, TI Programmable 58, 58C, 59:
* the key that locks the calculator to the printer is NOT the same for all printers (I have some w/o key)
* the fuse holder is not the same, even for same printer model (I have a PC-100A without fuse cap, and the fuse cap from another PC-100A doesn't fit)
1/
#TI #calculator -
One of the joys of #tax season -- getting to choose which #Retro #Calculator to use. Though I owned a #Sharp #Elsimate back in the day (I was the nerd in high school), all were acquired more recently. I loved the aesthetic of the #TexasInstruments #Datamath (I cleaned/rebuilt the battery compartment), and the #Canon 8-T was a must have (SEXAGESIMAL CALCULATOR) for the time calculation functions. These things were GOLD back when I worked in #TV #broadcasting and had to work out segment times for TV programs, etc.
Edit: Forgot, for the Datamath, also had to design and #3dPrint the name badge as the original was lost before I acquired it. Neat exercise that, fun with miniature paint too!
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Sharp EL-371H calculator teardown. Runs at 1.5 volts. The QFP48 chip has no text other than "9B JAPAN 9". The display has eight 7-segment digits plus some symbols and probably dots - around 67 elements total. 27 traces go to the display. Keypad has 24 buttons. (Previous owner's name redacted.)
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Back in the late 90s, when TI already ruled calculators in High Schools, I selected HP48 as my platform. It is a high-end engineering calculator with CAS capabilities, native units, stack based interface and programmable in RPL.
Recently I purchased a near mint HP48G and again have a physical calculator on my desk.
Between rich library, various symbolic solvers and even ... more on:
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Back in the late 90s, when TI already ruled calculators in High Schools, I selected HP48 as my platform. It is a high-end engineering calculator with CAS capabilities, native units, stack based interface and programmable in RPL.
Recently I purchased a near mint HP48G and again have a physical calculator on my desk.
Between rich library, various symbolic solvers and even ... more on:
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Back in the late 90s, when TI already ruled calculators in High Schools, I selected HP48 as my platform. It is a high-end engineering calculator with CAS capabilities, native units, stack based interface and programmable in RPL.
Recently I purchased a near mint HP48G and again have a physical calculator on my desk.
Between rich library, various symbolic solvers and even ... more on:
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Back in the late 90s, when TI already ruled calculators in High Schools, I selected HP48 as my platform. It is a high-end engineering calculator with CAS capabilities, native units, stack based interface and programmable in RPL.
Recently I purchased a near mint HP48G and again have a physical calculator on my desk.
Between rich library, various symbolic solvers and even ... more on:
-
Back in the late 90s, when TI already ruled calculators in High Schools, I selected HP48 as my platform. It is a high-end engineering calculator with CAS capabilities, native units, stack based interface and programmable in RPL.
Recently I purchased a near mint HP48G and again have a physical calculator on my desk.
Between rich library, various symbolic solvers and even ... more on:
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I've used a paid android app #AlmostTI for a long time as my default #calculator - an emulated TI-85. It currently has an issue with the latest android security update (they are working on it) but I need a calculator... I found "Graph 89" on F-droid, an open source #emu for a bunch of TI calcs (but not the TI-85 so I'm checking out the TI-89 since I had a ROM for that and wow its different. #Graph89 has been around for a long time but this is a fork for modern android
https://github.com/eanema/graph89 -
@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 -
I enjoy notepad calculators like https://numbr.dev, but I wanted something that works both as a web app and on local files via CLI and fix a few annoyances along the way. The result is https://github.com/karlb/calced/ .
Let me know how you like it!
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#Fullmoon, say #Meton, the ancient Greek, and his lunar phase #calculator.
https://www.thomasweibel.ch/?post=rechner-aus-dem-drucker
#astronomy #mathematics #mechanics #history #moon #moonphase #antiquity #archaeology #3dprint #diy #sciencehistory #digitalhumanities
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Graphing Calculator Gets USB-C Upgrade https://hackaday.com/2026/01/07/graphing-calculator-gets-usb-c-upgrade/ #PeripheralsHacks #calculator #microUSB #hpprime #upgrade #hotair #solder #usbotg #port #USBC #HP
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#Development #Resources
Library of Time · The countless ways cultures display time https://ilo.im/169dj1_____
#Calculator #Calendars #Clocks #Time #Design #UiDesign #WebDesign #WebDev #Frontend #Backend -
The original HP-15C from 1982 was my first programmable #RPN #calculator. I bought mine in 1985. By then, I was an upper-level #EE student, with a few years of #programming experience in a handful of languages from different paradigms, including assembly. Yet, I found keystroke programming on the HP-15C to be a challenge.
This little machine could store only 500 keystrokes in its memory, and the instructions were shown as numeric codes. It was rather like programming on the ET-3400 or the KIM-1—it was a right mess. Still, the HP-15C was the best engineer's pocket computer I could afford then, and I thoroughly enjoyed learning to use it well.
Not long after, when I entered the industry, EEs were all using MATLAB on Sun workstations, and our RPN calculators mostly sat on the desk. That was the beginning of the end for calculators. Yet, to this day, the HP-15C remains my all-time favourite RPN calculator.
PS—Those who are curious about programming the various HP RPN calculators may read my article on the subject.
https://amenzwa.github.io/stem/ComputingHistory/HowRPNCalculatorsWork/
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The TI-34 is a fairly basic scientific #calculator. I’m a big fan because it’s easy to use and not overwhelming.
I was reading the manual and discovered it has two functions:
ipart(x)
fpart(x)These return the integer and fraction parts of x.
ipart(2.34)=2
fpart(2.34)=.34Great! So, uh.. What are these typically used for? Why include them on such a *basic* calculator? #calculators #ticalc #ti34 #matheducation #mathchat
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The TI-34 is a fairly basic scientific #calculator. I’m a big fan because it’s easy to use and not overwhelming.
I was reading the manual and discovered it has two functions:
ipart(x)
fpart(x)These return the integer and fraction parts of x.
ipart(2.34)=2
fpart(2.34)=.34Great! So, uh.. What are these typically used for? Why include them on such a *basic* calculator? #calculators #ticalc #ti34 #matheducation #mathchat
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The TI-34 is a fairly basic scientific #calculator. I’m a big fan because it’s easy to use and not overwhelming.
I was reading the manual and discovered it has two functions:
ipart(x)
fpart(x)These return the integer and fraction parts of x.
ipart(2.34)=2
fpart(2.34)=.34Great! So, uh.. What are these typically used for? Why include them on such a *basic* calculator? #calculators #ticalc #ti34 #matheducation #mathchat
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The TI-34 is a fairly basic scientific #calculator. I’m a big fan because it’s easy to use and not overwhelming.
I was reading the manual and discovered it has two functions:
ipart(x)
fpart(x)These return the integer and fraction parts of x.
ipart(2.34)=2
fpart(2.34)=.34Great! So, uh.. What are these typically used for? Why include them on such a *basic* calculator? #calculators #ticalc #ti34 #matheducation #mathchat
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The TI-34 is a fairly basic scientific #calculator. I’m a big fan because it’s easy to use and not overwhelming.
I was reading the manual and discovered it has two functions:
ipart(x)
fpart(x)These return the integer and fraction parts of x.
ipart(2.34)=2
fpart(2.34)=.34Great! So, uh.. What are these typically used for? Why include them on such a *basic* calculator? #calculators #ticalc #ti34 #matheducation #mathchat
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Một ứng dụng desktop mới giúp chụp màn hình, tự động nhận diện số và tạo nút máy tính. Rất tiện lợi khi tính toán từ PDF, web mà không cần gõ tay. Có cả AI hỗ trợ phép tính phức tạp và lưu lịch sử. Dùng thử miễn phí 7 ngày!
#OCR #Calculator #ScreenCapture #AppMới #MayTinhOCR #UngDungTienIch
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This Free Calculator Figures Out Your Anamorphic Aspect Ratios https://petapixel.com/2025/11/28/this-free-calculator-figures-out-your-anamorphic-aspect-ratios/ #anamorphiclenses #aspectratios #calculator #filmmaking #blazar #cinema #video #News