HackadayIt’s 1979 – What Exactly Did That ∫ Key Do?
It’s 1979 – What Exactly Did That ∫ Key Do? https://hackaday.com/2026/03/10/its-1979-what-exactly-did-that-%e2%88%ab-key-do/
#Classichacks #ReverseEngineering #Algorithm #HP #Hpcalculator #Reverseengineering #ScientificCalculator
#Classichacks #ReverseEngineering #Algorithm #HP #Hpcalculator #Reverseengineering #ScientificCalculator
How HP Calculators Communicate Over Infrared https://hackaday.com/2026/01/27/how-hp-calculators-communicate-over-infrared/
#MiscHacks #Calculator #Hewlettpackard #HP #Infrared #ScientificCalculator #Z80
#MiscHacks #Calculator #Hewlettpackard #HP #Infrared #ScientificCalculator #Z80
Máy tính đồ họa hiện đại cho iOS vừa được phát triển - tìm kiếm phản hồi! Tính năng: đồ họa hàm, ma trận, máy tính khoa học. Giao diện hiện đại, mượt mà. #GraphingCalculator #iOS #MáyTínhĐồHọa #PhầnMềmMới #Calculator #ScientificCalculator #Math
https://www.reddit.com/r/SideProject/comments/1ovv2u7/built_a_modern_graphing_calculator_for_ios/
Andrea 📚Na, was denkt ihr?
Bekomme ich den wieder reaktiviert?
(Umfrage im ersten Kommentar)
Sinclair-Speccy#Tech #Computer #RetroTech #Retro #RetroTechnology #Magazine #Casio #Calculator #ScientificCalculator #VintageAd
Christian Lawson-PerfectJust been in a meeting with my faculty's disability support people, where they said they were trying to buy an accessible scientific calculator for a visually impaired student to use in exams.
Googling, I found this - https://www.visionaid.co.uk/calculators/sciplus-3300---scientific-calculator-with-speech - which has the assistive tech margin added for a cost of £535!
Meanwhile, I know the Desmos calculator is accessible and free, so it'd be cheaper to just buy a cheap tablet or laptop and use that!
Are there any other accessible scientific calculators that they should look at?
I mean, they're not hard to make in software. I've made several myself.
#accessibility #VisualImpairment #calculator #ScientificCalculator #exam
SciPlus 3300 - Scientific Calculator with Speech
Large button, big display scientific calculator designed specifically for users with low vision. Performs scientific, statistical and trigonometric calculations, and fractions. It has the ability to evaluate functions and enables you to evaluate mathematical expressions. Includes speech output via earbuds which are included.Key FeaturesThree language audio output in English, French and Spanish (Arabic coming soon)High resolution, 7 inch, four-line colour displaySelectable foreground/background coloursOnly 1.25lb (0.56kg)Long-life battery What's Included?SciPlus - 3300 Scientific Calculator with SpeechLarge print user manual USB charger and UK adapter1 year warranty
Brad LinderHP 15C Collectors Edition looks just like the classic scientific calculator from the 1980s, but features "up to 100x faster processing speed." Up for pre-order now in Europe, the UK, and the Asia Pacific region for around $120. https://hpcalcs.com/product/hp-15c-collectors-edition/
HP 15C Collector's Edition - HP Calc
Enhanced version of the classic HP 15c After a 12-year hiatus, HP is reintroducing the popular HP 15c Scientific Calculator in a Collector’s Edition. This HP classic features a unique “Collector’s Edition” script, making it a great gift for collectors and engineers alike. The HP 15c offers users a high-end and portable, scientific calculator with […]
hackaday unofficialAn Open-source Scientific RPN Calculator
Why reach for a bland, commercially available calculator when you be using a model that employs RPN (Reverse Polish Notation) in its calculations and be a custom build all at the same time? The kids may have colour TFTs and graphing functions, but your keyboard has no equals sign, and that means something.
Unfortunately for RPN enthusiasts, the RPN calculator is a little on the rare side. Since classic models from the 1970s and '80s are rather pricey, [Anton Poluektov]'s just build his own called the OpenCalc. This glorious specimen is an open hardware RPN calculator with more than a nod to the venerable Hewlett Packard HP42 in its design.
At its heart is an STM32L476 low-power ARM processor and a Sharp Memory LCD display, all on a PCB clad in a 3D-printed case you'd have been proud to own in the 1980s. It runs from a CR2032 which is more than can be said for some modern styles of calculator, and it gives the user everything you could wish for in a scientific calculator. The key legends are a set of printable stickers, which when printed on self-adhesive laser film prove durable enough to last. All the resources can be found in a GitHub repository, so if RPN is your thing there's nothing to stop you building one for yourself.
If RPN interests you, it's a subject we've looked at in greater detail in the past.
#handheldshacks #calculator #reversepolishnotation #rpn #rpncalculator #scientificcalculator
