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Well Casios are better than TI calculators. My current favorite calculator is Casio ES-115 PLUS2 https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientific

Well Casios are better than TI calculators. My current favorite calculator is Casio ES-115 PLUS2 https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientific-Calculator/dp/B086Z79HXS/ref=asc_df_B086Z79HXS/?tag=hyprod-20&linkCode=df0&hvadid=459562603100&hvpos=&hvnetw=g&hvrand=10200270384879542086&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9002000&hvtargid=pla-914898201055&psc=1 https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientifi... I like it because when you enter sin(pi/12) you get (sqrt(3)-1)/(2*sqrt(2)) in mathematical notation, which is really nice for a $16 calculator. Here I'm going to hurt TI: If you need a TI-84 or TI-89 for school, the place to get them cheap is shopgoodwill.com: https://www.shopgoodwill.com/Listings?st=ti-84%20plus&sg=&c=&s=&lp=0&hp=999999&sbn=false&spo=false&snpo=false&socs=false&sd=false&sca=false&caed=7/12/2021&cadb=7&scs=false&sis=false&col=0&p=1&ps=40&desc=false&ss=0&UseBuyerPrefs=true https://www.shopgoodwill.com/Listings?st=ti-84%20plus&sg=&c=...

parsecs 5y ago
Cleaned url: https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientific-Calculator/dp/B086Z79HXS/ https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientifi... Thank you so much for pointing out fx-115ES PLUS2! I looked for a good hour yesterday trying to find an alternative to the fx-115ES PLUS (first edition) with the same features, after Casio discontinued the original. I'm honestly embarrassed that I had overlooked this... I do absolutely agree that Casio calculators are just wholly better than TI in general. Their menu driven interface is a game changer for me back in middle school. TI-36X Pro felt cumbersome and confusing, while fx-115ES was much more intuitive.
- dng88 5y ago
  Better as it is solar… can it use similar firmware with similar c and web server?
- VikingIV 5y ago
  They're amazing little machines. I have a predecessor to that model, whose battery still works since purchased new for my school year starting in 2000. It's not solar-charged, either.
- saagarjha 5y ago
  I really don't understand why Casio keeps changing the entire design of their calculators, though.
  - naikrovek 5y ago
    they don't; they have multiple lines which don't change much generation to generation. a casual observer might think that they can't pick a design.
    - saagarjha 5y ago
      I’m not sure I understand. The calculator linked is the second version of that model, which to my understanding is identical software wise but looks completely different.
emodendroket 5y ago
TI is pretty clearly just coasting on being the one mandated by a lot of schools; there's no way you can justify them still costing like $100 and having the same capabilities as when I was in high school.
- tititititi 5y ago
  Your comment is like the XKCD from a decade ago that says the same thing, except not funny or original https://xkcd.com/768/ https://xkcd.com/768/
- krallja 5y ago
  The new ones have rechargeable batteries, color screens, USB, and Python. So, only a decade out of date.
  - imbuhuo 5y ago
    TI still use really outdated hardware (some ARM9 thing) on their high-end nSpire models. With the same price even HP Prime G2 has way better hardware (NXP iMX6ULL, Cortex-A7, 256MB DDR3, USB EHCI OTG) and wide software spectrum (no Secure Boot enforced.) I've put full scale Linux and Windows ARM (arm32 IoT) on that platform.
    - Thetawaves 5y ago
      Fun Fact: New Arm 9 chips are still coming out to this day. They are the highest performing Arm chips that feature generic external bus interfaces.
- crazygringo 5y ago
  I searched for graphing calculator apps on iOS the other day and found a ton that simply attempt to recreate the TI-84, e.g. [1]. So anyone with high school kids: are they still buying $100 physical calculators? Or are they just using free/cheap apps? [1] https://apps.apple.com/us/app/graphing-calculator-x84/id1247828717 https://apps.apple.com/us/app/graphing-calculator-x84/id1247...
FridayoLeary 5y ago
>Well Casios are better than TI calculators. Agreed. For basic maths, the best scientific calculator is the fx83. The ES 115 is based on it. The graphics and controls and navigation is really good. Nothing comes close.
behnamoh 5y ago
"This website is hosted on a Casio..." Not anymore it isn't.
nomel 5y ago
I really enjoy the HP calculators. RPN is much closer to how my brain perceives the equations.
- abawany 5y ago
  Unfortunately they seem to have abandoned it on their newer models: I recently got a HP Prime and no RPN in sight afaict (https://www.hp.com/us-en/campaigns/prime-graphing-calculator/overview.html https://www.hp.com/us-en/campaigns/prime-graphing-calculator...) .
  - mjcohen 5y ago
    Sure there is. Go to Settings and move down to Entry. Hit Enter and you get your choice of Textbook, Algebraic, or RPN. Go down to RPN, press Enter and then Esc. Presto, RPN.
    - abawany 5y ago
      Thank you - I used the calculator more in the last hour after making this change than I had in the past month. I'm ashamed I didn't figure this out - I should have done a better job of RTM.
mmcgaha 5y ago
Checking in with a TI-30X Pro and get the equivalent (sqrt(6)-sqrt(2))/4 also in mathematical notation. All of my work is saved when I turn the calculator back on. Plus I can just set a flag for imaginary mode without a separate complex app so everything works the same in both modes. The screen is higher resolution and the multi-tap entry is pretty darn sweet.
- jhallenworld 5y ago
  Annoyingly TI-30X Pro is Europe only (also costs more, but looks better quality and design)... but you are right, it looks pretty good, as does the US-available TI-36X Pro. I will give one a try. My main gripe with TI is the school requirement for the TI-84 series.
j1elo 5y ago
Must be a market specific model, because that one shows up for me in the .com tld but not in the regional one :-( But from there I've started digging and they have so many different models with similar appearances... Anyone knows the difference between fx-82ES and fx-82SPXII?
- urutau 5y ago
  FX-115ES Plus-2 is the model for the USA market. For other countries the same device (but in another color) goes by FX-991ES Plus-2. https://www.casio.com/sg/scientific-calculators/product.FX-991ESPLUS-2/ https://www.casio.com/sg/scientific-calculators/product.FX-9...
  - j1elo 5y ago
    Thanks!! The naming is so confusing... How are we supposed to know that "115ES" and "991ES" are in fact the same thing?
saagarjha 5y ago
> Well Casios are better than TI calculators. For scientific calculators, I would agree. For graphing calculators they might be better on technical merit or cost, but everyone is going to write programs for the TI so you might as well get that one.
- pjmlp 5y ago
  Not everyone, TI seems to be US thing due to the government agreements. I never owned one, and got three generations of scientific programmable CASIO calculators. It was either that or HP ones, as TI were pretty much ignored in Portugal.
nvader 5y ago
I don't know what TI ever did to you, but I know that I would not cross you lightly.
- vanderZwan 5y ago
  They're exploiting an effective monopoly position (through schools mandating their usage). I can see that being enough of a reason to push back against that.

parsecs 5y ago

Cleaned url: https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientific-Calculator/dp/B086Z79HXS/ https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientifi... Thank you so much for pointing out fx-115ES PLUS2! I looked for a good hour yesterday trying to find an alternative to the fx-115ES PLUS (first edition) with the same features, after Casio discontinued the original. I'm honestly embarrassed that I had overlooked this... I do absolutely agree that Casio calculators are just wholly better than TI in general. Their menu driven interface is a game changer for me back in middle school. TI-36X Pro felt cumbersome and confusing, while fx-115ES was much more intuitive.

dng88 5y ago
Better as it is solar… can it use similar firmware with similar c and web server?
VikingIV 5y ago
They're amazing little machines. I have a predecessor to that model, whose battery still works since purchased new for my school year starting in 2000. It's not solar-charged, either.
saagarjha 5y ago
I really don't understand why Casio keeps changing the entire design of their calculators, though.
- naikrovek 5y ago
  they don't; they have multiple lines which don't change much generation to generation. a casual observer might think that they can't pick a design.
  - saagarjha 5y ago
    I’m not sure I understand. The calculator linked is the second version of that model, which to my understanding is identical software wise but looks completely different.

emodendroket 5y ago

TI is pretty clearly just coasting on being the one mandated by a lot of schools; there's no way you can justify them still costing like $100 and having the same capabilities as when I was in high school.

tititititi 5y ago
Your comment is like the XKCD from a decade ago that says the same thing, except not funny or original https://xkcd.com/768/ https://xkcd.com/768/
krallja 5y ago
The new ones have rechargeable batteries, color screens, USB, and Python. So, only a decade out of date.
- imbuhuo 5y ago
  TI still use really outdated hardware (some ARM9 thing) on their high-end nSpire models. With the same price even HP Prime G2 has way better hardware (NXP iMX6ULL, Cortex-A7, 256MB DDR3, USB EHCI OTG) and wide software spectrum (no Secure Boot enforced.) I've put full scale Linux and Windows ARM (arm32 IoT) on that platform.
  - Thetawaves 5y ago
    Fun Fact: New Arm 9 chips are still coming out to this day. They are the highest performing Arm chips that feature generic external bus interfaces.
crazygringo 5y ago
I searched for graphing calculator apps on iOS the other day and found a ton that simply attempt to recreate the TI-84, e.g. [1]. So anyone with high school kids: are they still buying $100 physical calculators? Or are they just using free/cheap apps? [1] https://apps.apple.com/us/app/graphing-calculator-x84/id1247828717 https://apps.apple.com/us/app/graphing-calculator-x84/id1247...

FridayoLeary 5y ago

>Well Casios are better than TI calculators. Agreed. For basic maths, the best scientific calculator is the fx83. The ES 115 is based on it. The graphics and controls and navigation is really good. Nothing comes close.

behnamoh 5y ago

"This website is hosted on a Casio..." Not anymore it isn't.

nomel 5y ago

I really enjoy the HP calculators. RPN is much closer to how my brain perceives the equations.

abawany 5y ago
Unfortunately they seem to have abandoned it on their newer models: I recently got a HP Prime and no RPN in sight afaict (https://www.hp.com/us-en/campaigns/prime-graphing-calculator/overview.html https://www.hp.com/us-en/campaigns/prime-graphing-calculator...) .
- mjcohen 5y ago
  Sure there is. Go to Settings and move down to Entry. Hit Enter and you get your choice of Textbook, Algebraic, or RPN. Go down to RPN, press Enter and then Esc. Presto, RPN.
  - abawany 5y ago
    Thank you - I used the calculator more in the last hour after making this change than I had in the past month. I'm ashamed I didn't figure this out - I should have done a better job of RTM.

mmcgaha 5y ago

Checking in with a TI-30X Pro and get the equivalent (sqrt(6)-sqrt(2))/4 also in mathematical notation. All of my work is saved when I turn the calculator back on. Plus I can just set a flag for imaginary mode without a separate complex app so everything works the same in both modes. The screen is higher resolution and the multi-tap entry is pretty darn sweet.

jhallenworld 5y ago
Annoyingly TI-30X Pro is Europe only (also costs more, but looks better quality and design)... but you are right, it looks pretty good, as does the US-available TI-36X Pro. I will give one a try. My main gripe with TI is the school requirement for the TI-84 series.

j1elo 5y ago

Must be a market specific model, because that one shows up for me in the .com tld but not in the regional one :-( But from there I've started digging and they have so many different models with similar appearances... Anyone knows the difference between fx-82ES and fx-82SPXII?

urutau 5y ago
FX-115ES Plus-2 is the model for the USA market. For other countries the same device (but in another color) goes by FX-991ES Plus-2. https://www.casio.com/sg/scientific-calculators/product.FX-991ESPLUS-2/ https://www.casio.com/sg/scientific-calculators/product.FX-9...
- j1elo 5y ago
  Thanks!! The naming is so confusing... How are we supposed to know that "115ES" and "991ES" are in fact the same thing?

saagarjha 5y ago

> Well Casios are better than TI calculators. For scientific calculators, I would agree. For graphing calculators they might be better on technical merit or cost, but everyone is going to write programs for the TI so you might as well get that one.

pjmlp 5y ago
Not everyone, TI seems to be US thing due to the government agreements. I never owned one, and got three generations of scientific programmable CASIO calculators. It was either that or HP ones, as TI were pretty much ignored in Portugal.

nvader 5y ago

I don't know what TI ever did to you, but I know that I would not cross you lightly.

vanderZwan 5y ago
They're exploiting an effective monopoly position (through schools mandating their usage). I can see that being enough of a reason to push back against that.