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r/calculators

▲ 54 r/calculators+1 crossposts

HP 40gs. Mi nueva compañera

Curiosa calculadora: tiene CAS, el sistema de applets y es algebraica. Creo que se lanzó para hacerle la competencia a la TI-83 y TI-84 en su momento. Y tiene algo que no me gusta, que fui observando mientras la probada. A ver si alguien lo sabe o si posee una y que lo haya notado.

u/ElectroZeusTIC — 4 days ago
▲ 12 r/calculators+1 crossposts

New addition to my Casio SL series (Slim Line) collection. SL-900 Introduced in 1985.

u/Fun_Carry7619 — 6 days ago
▲ 4 r/calculators

Couch find TI84 Plus

Friend of mine bought a couch off of Facebook marketplace. Was cleaning it up, vacuuming beneath the cushions and found this TI84 down in the crevices! 5/06 build and had dead Energizers that expired in 2014, so possibly its first batteries! Luckily, there was no corrosion. Put aaa's in from my Casio CG100 and it fired right up! Os 2.40, so most likely never been updated. Should I update to 2.53MP, or leave it OEM? I already have a TI-84 Silver Edition Teacher ViewScreen calculator that I used with my old TI Presentor.

u/TheCalcLife — 10 days ago
▲ 64 r/calculators

I just got my first Hp

I managed to find an HP 33s for a reasonable price after months. It's ugly as hell, but it's still so cool to me :)

u/nabookk — 12 days ago
▲ 7 r/calculators

Recently bought this casio fx-991MS 2nd edition. Is there any way to tell if it's authentic?

u/Queeroshima — 11 days ago
▲ 64 r/calculators

My dad got me this TI-30 as a gift!

I know it's nothing special and I prefer RPN but I think this calc looks awesome! The display is really cool!

u/limon_picante — 12 days ago
▲ 3 r/calculators

Looking for a calculator

Hello,

I'm looking for a bit of help to find a calculator with particular features.

I'm dyslexic and find it difficult to track digits without the comma e.g. 5,000,000 is better than 5000000. A display with commas would really help. A 2 line display showing the calculation would also be helpful. A double zero button and the ability to go back through a calculating and edit numbers would be gold standard.

Does such a calculator exist?

Thank you 😊

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u/Useful_Tea_72 — 11 days ago
▲ 5 r/calculators

why does my frctions button display like this on my fx-991CW+?

recently my calc was displaying the fraction as symbol show in image above, why does it display it this way? and how do i fix it? i looked in the setting but couldent find the cause, please help.

u/IGnat0r-200 — 11 days ago
▲ 9 r/calculators

Dark spot on the LCD screen.

Calculator and the screen works fine I do not have a problem with dark spot but I am scared, it could grow and my display can be bricked. If that happens, I just can't shift to 991 ES or CW. I love this calculator so much. pls someone tell me, i can do smth about this

u/Rotarydisc — 11 days ago
▲ 2 r/calculators

Question: what calculator is this a knock-off of?

Bought this in Germany mid 1980s. The brand Provileg was a reseller back then. I'd like to know what the original calculator was. I'd like to fix it; the rubber pad below the keys dissolved.

u/6502zx81 — 11 days ago
▲ 3 r/calculators

Favorite Calculators OAT - Seeking Recommendations (Applied Mathematics/Econ)

Hello! I am a new college student. All my life I have despised math in an academic sense. However, I am fascinated by it, & I want to learn more. I have previously worked in finance & find myself drawn to math as a whole/way of thinking. I am going to major in applied math/econ. Have no experience using scientific/graphing calculators (relied entirely on mental math up until this point). I learn quick & am extremely fascinated by calculators, EDC, any & all things utility forward & vintage (maybe i'll get to learn RPN since I am a blank slate). Anyways, looking for recommendations for your favorite calculators of ALL TIME that will be able to sustain me through my studies in this particular degree path.

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u/eothane — 10 days ago