What are
/r/calculators'
favorite Products & Services?
From 3.5 billion Reddit comments
The most popular Products mentioned in /r/calculators:
The most popular Services mentioned in /r/calculators:
Desmos
HotKeyP
GeoGebra
DeepL Translator
wxMaxima
Precise Calculator
Mathics
MathStudio
LibreOffice
CNET Download.com
Xcode
PICO-8
The most popular Android Apps mentioned in /r/calculators:
RealCalc Scientific Calculator
RealCalc Plus
Free42
MATLAB Mobile
HP Prime Pro
Pocket Scientific Calculator
The most popular reviews in /r/calculators:
looks like thiscable
I used to have a HP-48, its symbolic integration functionality was more a parlor trick than something actually useful.
I would recommend Mathics, essentially a FOSS Mathematica clone written on top of the Python SymPy package: https://mathics.github.io/
As it is something released by HP themselves (pending you are discussing https://play.google.com/store/apps/details?id=com.hp.primecalculator&hl=en ) then I'd say it comes ready to use as soon as you buy/install it. I'm not really sure of anyone that has taken the time to buy and use that version though, so I don't have a definitive answer for you. I'll poke around and see if I can find someone with more information about it.
HP Prime has an emulator which works on Windows, Mac, Linux and Android. https://play.google.com/store/apps/details?id=com.hp.primecalculator.free&hl=en_US&gl=US
Find out what you want.
Don't feel like you need an expensive TI graphing calculator, because most professors won't let you use them on exams anyway. Consider a decent scientific. I'm in my 2nd year of college and in Calculus III for Engineers and Linear algebra and all I've needed is a good scientific - mostly the Casio FX-115ES Plus2. It's like $15 online and in stores. The Casio fx-991EX ClassWiz ($20) is pretty good too and has a much higher resolution screen for like $20. It has Table, Statistics (regression functions), and Distribution apps.
Oh sorry my bad it’s a Casio here is a amazon link
https://www.amazon.com/CASIO-PRIZM-FX-CG50-Graphing-Calculator/dp/B0711D5RNZ/ref=sr_1_4?crid=TEQUARWHN1QG&keywords=ti84+plus+ce+graphing+calculator&qid=1660021468&refinements=p_89%3ACasio&rnid=2528832011&s=office-products&sprefix=t84+plus+ce+calculator%2Caps%2C120&sr=1-4
Amazon Netherlands link for CE-T
I have a Paiyule case. Their version of this case for the Prime is plenty big enough for the Prime and an HP 35S, with no shaking or pressure on the keys. The depth is the same on both sides of the case, so I'd wager that the one for the 84CE/Nspire would work just fine to fit both in the case. It's nothing fancy, but it's effective for keeping them together and from getting banged up in my bag.
Found the electrical engineering student. 😁
I know this is out of your price range, but in case you can't find anything in that range, you could check out the Casio fx-CG50. It is listed on amazon.de for 110€, which includes VAT. (I don't know if you are in Germany - I just went to amazon.de because I know prices are given in Euro).
As a quick check, I solved a 2-equation system of all complex numbers, and it did just fine. If you want to try before you buy, you can download the emulator for a free 30-day evaluation.
I use CalcES, I think it's default is a 991 layout according to the app page, but says it has a300 layout. I am not that familar with casio calcs, but the layout looks close from what I can tell.
According to my research, the closest sharp calculator models (to your model) that I find that can integrate are: Sharp EL-546X and EL506X. From what I can assume your calculator cannot integrate.
If you have more questions or want to investigate further, I leave you the
It’s still available on the Amazon UK site, for £53.70 https://www.amazon.co.uk/HP-35S-B12-Scientific-Calculator/dp/B004A0XHH4/ref=sr_1_1?crid=1BYNDK8J77WQ8&keywords=hp%2B35s&qid=1645123865&sprefix=hp35s%2Caps%2C88&sr=8-1&th=1
https://www.amazon.com/Casio-fx-9750GIII-Black-Graphing-Calculator/dp/B086Z7Q7G7?ref_=ast_sto_dp
this one can do everything
When the light immediately turns green, that means your battery is toast and needs to be replaced. You can find replacements on Amazon: https://www.amazon.com/Rechargeable-Battery-Nspire-CAS-MODEL/dp/B00SMRLU3O/ (the Nspire CX conveniently uses the exact same battery)
considering most people have smartphones now, how about phone app?
there is excellent HP 42s app for both ios and android:
https://apps.apple.com/app/id337692629
https://play.google.com/store/apps/details?id=com.thomasokken.free42
... but there are many more, including ones with 3d graphing etc
Sharp El-1501 Compact Cordless Paperless Large 12-Digit Display Desktop Printing Calculator That Utilizes Printing Calculator Logic https://www.amazon.com/dp/B07QY4PR7Q/ref=cm_sw_r_cp_api_glt_i_RF02Y0H67T7TEWXCWQW8?_encoding=UTF8&psc=1
I never heard of a new $3 scientific. BUt you have to buy the battery, it doesn't come with one?
This one to me is the cheapest OK scientific at under $9:
https://www.amazon.com/Casio-Scientific-Calculator-FX-260-SOLARII-S-IH/dp/B071R3H9WB/
These people will sell you minimum 72 of these unkown brand weird calculators for $4.09 each. So Minimum order $294.48 plus maybe tax and shipping and who knows if they even work.
https://www.amazon.com/Casio-Scientific-Calculator-FX-260-SOLARII-S-IH/dp/B071R3H9WB/
Four for $22.49 so $5.69 each.
But seriously, also pick up like one Casio fx260 Solar for $8.49 and a fx-300ESPLUS2 for $12.99 off the shelf at WalMart and try them out. Maybe your students would like some options.
Or look here, the fx-300ESPLS2 is $9.97 in PINK at amazon: https://www.amazon.com/Casio-fx-300ESPLS2-Pink-Scientific-Calculator/dp/B091MJ2GS3/
These ones that show natural math notation on the screen a lot of students have an easier time with.
OK so it's not a software issue, there's something wrong with the hardware. Hopefully your battery just isn't working. I didn't find a replacement HP battery with just a quick search, but I personally use a Galaxy S3 battery in my HP Prime so I know they are compatible: https://www.amazon.com/Samsung-Replacement-T-Mobile-Discontinued-Manufacturer/dp/B0089VO7OM
How old is your calculator? You might be able to use your warranty and get a replacement. HP outsourced their calculator division a few months ago but I don't know if that has affected customer service. Please let me know if it's frustrating at all to get a replacement.
I ONLY BUY GENUINE CSIRO:
https://www.amazon.com/dp/B083FF8P6L/
WAIT WAIT WAIT I MEANT TO SAY GENUINE OSALO:
https://www.amazon.com/dp/B088CYCDF8/
These are all fascinating because they are all exact clones of the Casio fx-115ES and I am pretty sure they are running the exact code. Now Casio DOES license this OS, they did to Canon who made a better fx-115ES with higher precision and some usability improvements. Did Casio license to these off-brands too, or did they just steal the ROM image and schematics and keep producing the old ones after Casio updated their design. Now amazon blatantly sells these openly so you would think they are licensed, but you definitely can not assume that with Amazon as buying from amazon these days is as legit as buying genuine ROLEK watches from a guy selling them out of the back of a truck at 1AM on some side street.
Every exam will be different. I can't just give a blanket 'this will work on every exam' statement because I couldn't say that about any calculator. It should be compliant with any standardized test, however you should always check that the calculator is allowed.
It's definitely a steeper learning curve than the TI-84 variant, but I think it will be worth the extra time. The Nspire is significantly more powerful and feature rich and will last you much longer than the TI-84. I would suggest looking up reviews for a list of differences.
Whether you need CAS or not depends on what you plan on doing in the future. Engineers will find CAS very useful however non-math focused majors likely wont.
The Nspire CX (released in 2011) sold for $150 here in the US and now sells for roughly $60. You'll have to determine whether the resale value is good enough for you.
If you're in the EU, why are you buying from the US Amazon? You can find it for 130 euro on amazon.fr: https://www.amazon.fr/Texas-Instruments-TI-NSPIRE-II-T-Calculatrice/dp/B07PH72417
That's a fair price for a nonprogrammable grapher and it looks to be in good condition.
I was surprised just now to find someone selling them "new" on amazon given they were discontinued in 1998. However the reviews explain things. A con artist is selling smashed up, worn out and non functional TI-80s that they pulled out of a dumpster somewhere. Also they have been doing so since 2013 and amazon lets them keep their store up. The amount of crap and counterfeit and used and broken stuff sold as new on amazon is amazing as is amazon's lack of interest in doing anything at all about it.
The HP35s is relatively larger than the conventional scientific calculators from TI and Casio. The typing sensation is also significantly better with clicking keys and a rather pleasant feel. The screen, on the other hand, is not matrix and is smaller in size and resolution.
​
The main difference is that the HP35s is a programmable calculator. You can type and edit programs to execute different tasks. On this side, it is close to the Casio fx 5800P.
​
The other significant difference is the ability to type calculations in RPN. And as a result, there is no natural writing, no exact calculation. After that, there is an option to transform the decimal number into a close fraction. (FDISP in blue on the point)
​
To go in this direction, there is a beautiful and pleasant equation solver (EQN) that preserves the equations and allows them to be solved, especially with complexes for example.
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Translated with www.DeepL.com/Translator (free version)
Maybe not strictly calculators but:
Geogebra pretty useful for geometry problems
WolframAlpha overkill/cheat mode... good for checking but you won’t have it in an exam
Oh so the idea here is it would work like this?
https://www.amazon.com/Wireless-Portable-Financial-Accounting-Extensions/dp/B07RZZMV62/
That is a really cool idea. No, that is not something you could reasonably retrofit regular calculators to do and would be a big hack. The usual solar power also wouldn't be sufficient to run the radio transceiver.
Link where I bought it from. It shows the silver buttons, but I still got the Grey ones. YMMV though
In terms of scientific calculators, somewhere in my house is the Casio scientific calculator I had from Middle School through high school. I really want to find it. In the meantime, the RealCalc app has always been my favorite calculator app that emulates the functionality of the calculator that I know I'd somewhere in my home. Someday I will reunite with it.
Never underestimate a venerable classic! 🤓❤🖩
The other end should be, if you are living in 2021.
Yes, it sucks the 84 doesn't have type c. I have the latest Python edition and, sadly, it uses the stupid (probably worst of them all) USB connector.
Yeah so you would need the specific TI graph link cable. This one Amazon
You can usually find used ones pretty cheap on eBay if that’s not the one you have.
The coloring, positioning, and font of the keyboard labels make me suspicious that this is a counterfeit. Also, the font in "fx-350MS" looks off: it seems much too bold, and the outer legs of the M shouldn't be parallel with one another. Kerning on the CASIO logo seems sloppy as well.
Compare to this Amazon product image:
https://www.amazon.com/Casio-Scientific-Calculations-Calculator-Functions/dp/B0000UJBYG
it looks like a generic mp3 player, function wise
edit: kind of like this one
I have one and the clicks are super soft. I have to put the calculator up to my ear to hear them -- no click at arms length.
If you want them to be completely silent, buy and install these:
I just entered "TI-30X Pro mathprint" into Amazon and got this:
https://www.amazon.com/dp/B07BNMB84P
Overpriced, though. When that happens I just make a noet and check again every week or so until I see one at a reasonable price.
Doing a Google search "TI-30X Pro mathprint" and clicking on "shopping" found one for $34.
It's partly because I'd like to be able to just pick one up from the store at a very inexpensive price that does everything my fx-115 es plus does. I have more-powerful graphing calculators, but would like a cheap one I can take everywhere without worrying about having it stolen or broken, as well as having a longer battery life than any graphing calculator has. The much faster (according to benchmarks) and aesthetically more-pleasing fx-991ex would have filled that need for me. The aesthetics matter in this case since I can easily see more information on the screen at once and have to scroll less often if at all in order to see a longer formula. However, the 991EX (US) lacks lots of functions that made its predecessors of 6 or 7 years here stand out. I know for certain that the Japanese version has even more functions (by a small margin) than the German version and can be switched to English, but it would be three times as expensive for me to acquire as well as requiring wait time for it to arrive. The whole point was to be able to find a calculator that can easily be replaced that I can take everywhere that is at least as good as the one I have with an updated processor for more-quickly making intensive calculations and that's even easier to use due to a display that can contain more information.
Note: Just to confirm that the ClassWiz series is significantly faster than what I have, I watched this video and performed the same calculation on my fx-115ES Plus. While my 115ES Plus, at 2 minutes 58 seconds, was 30 seconds faster than the 991ES, it was vastly outperformed by the 991DEX, which only took 36.8 seconds in total. The ClassWiz series, it seems, is about 5 times faster than what I have according to that example.
I used this for applied calculus Casio fx-115ES PLUS Engineering/Scientific Calculator https://www.amazon.com/dp/B007W7SGLO/ref=cm_sw_r_other_awd_eTKxwb9D86A41
I've since recommend the calculator to friends and most of them concerted to Casio because of the calculator.
I've personally found that Casio is easier to use, battery lasted longer, less expensive, and often has more functions over other brands.. I've used this calculator for many years.. in Calculus and Algebra we weren't allowed to use Graphing calculators so this was a life saver... also it can solve for X http://smile.amazon.com/Casio-fx-115ES-Engineering-Scientific-Calculator/dp/B007W7SGLO/ref=sr_1_1?ie=UTF8&qid=1443998067&sr=8-1&keywords=casio+115
There are specific calculators that do that like this one. but I'd recommend getting a scientific that has built in unit conversions. Try a TI-36X Pro or a Casio fx-115 ES.
I can't find one with a big screen. You might want to look at specific apps for whatever type of phone you're using.
Short answer: HP 39gs.
Long answer depends on a few more things:
- What do you plan to study in college? Will you need the calculator for calculus? engineering? computer science? linear algebra?
- Do you need to be able to use it on any particular standardized tests?
- Do you have any experience or familiarity with other calculators?
- Do you know how to program? Do you want to know how to program?
- Can you figure out how to do things on the calculator on your own with the manual, or do you need your teacher or textbook to demonstrate?