Casio fx-991CW Scientific Calculator Review

➡️ Get a Casio fx-991CW: is.gd/haxe68
This video is a review of the Casio fx-991CW Scientific calculator, a design update of the popular fx-991EX.
Sections of this video:
0:00 - Intro
1:06 - Physical Design
3:16 - Apps and Menu Navigation
5:47 - Format Key
7:45 - Variables and Functions keys
8:59 - Summary
For more calculator videos check out my channel / calculatorculture

[@wb.c]

Big plus with the CW is spreadsheet data, f(x), g(x), and stat data is not lost when switching modes. You can now use f(x) and g(x) in other apps like spreadsheet. Also you can set the power timeout to 60min. A huge draw back is the loss of the CALC feature and ":" that allowed for stacked calculations. Perhaps this loss can be made up within the spreadsheet mode. I think the improved data retention is well worth the compromises if you are considering doing from the EX to the CW.

[@dimaminiailo3723]

the changes applied to the variables somewhat remove the sense of CALC, although the colon func was amazing. you could literally write a small program with non-programmable calculator

[@HamzaAleem_Math]

And when I define matrix and off the calculator the data is not lost this is the amazing feature and also with some other modes I save my data in matrix. This is the reason I love this calculator.

[@vyrsh0]

​@@dimaminiailo3723 I have always tried to find what the colon does, but still cannot figure it out nor can I find any videos on it. Do you know what I should put on KZbin to find a video about it?

[@dimaminiailo3723]

@@vyrsh0 Look in the instruction or any 10-hours long video on using the calculator. If you input something like y=x+2 : z=2y : x=y+2 with initial y = 0 it calculates the formulae from left to right upon pressing = 0+2 = 2 2*2 = 4 4+2 = 6 and so on. The notable thing is that you may insert x = f(x) and it replaces x with its new value, which reminds me of programming languages.

[@ShebanFPV]

I would like to share my recent experience with purchasing two calculators. Two weeks ago, I bought the 991CW model for £12, and just today, I acquired the 991EX for £35. My experience with the 991CW was somewhat frustrating. I found it required too many steps to achieve the desired result, such as converting numbers into degrees, entering these degrees, and so on. In contrast, the 991EX offers a much simpler and quicker operation. Regarding the design, the 991EX has round buttons, which might not be to everyone's taste. The 991CW, on the other hand, features convenient arrow keys and an OK button. Its font is clearer and appears more modern. Overall, after comparing both, I have decided to go with the 991EX as it significantly enhances ease of use for me.

[@cindyx2973]

Where did you manage to get your hands on the 991EX? They discontinued it and i’m desperately looking for it for my maths exam soon because I also find it frustrating and time consuming for the 991CW

[@HamzaAleem_Math]

Yes I have same though before I too much used fx991cw but when I practice this calculator calculator this is too much better than ex . It is best calculator more features more intuitive design and handy calculator. I advised you to practice this calculator this is a best calculator. I have both but I like cw and used In my day to day life. And when I define matrix and off the calculator the data is not lost this is the amazing feature and also with some other modes I save my data in matrix when I set data in spreadsheet and give it screen off timer 60 min it means less chance of losing data. This is the reason I love this calculator.

[@TheEddie581]

The 991CW has the obnoxious round keys, not the EX.

[@cindyx2973]

@@TheEddie581 Agreed I have slightly big finger tips so it’s kind of hard navigating around the eye-sore buttons

[@saujanyapoudel8910]

I Set my default output format to decimal so I won't need to change to decimal manually each and every time. Plus I have memorized every order of keystrokes required to use a function of my choice. For doing repetitive computations with large numbers I put them in spreadsheet and derive my required results using 'fill formula' option. I agree on the CW being complicated but the buttons are comfortable compared to the EX. The data inputs in other modes (statistics, matrix, spreadsheet, vector) are not erased when changing mode so you can work with them without re inputting them. The CW does have its pros compared to the EX

[@kahuna1247]

Not a fan. Casio relocating the ANS key is as criminal as HP relocating the Enter key.

[@andreasrejbrand5042]

I find the fx-991EX much more aesthetically pleasing.

[@sioux22]

Matter of opinion. I paid extra for the CW for the cleaner look. It fits in better with my collection of vintage calculators.

[@goofyahhaccount119]

​@@sioux22 are they the same thing or is one better

[@Crazytesseract]

The fx-991D was even more aesthetically pleasing as far as I am concerned.

[@Crazytesseract]

​@@goofyahhaccount119They are not the same thing. As per my opinion the CW is user unfriendly.

[@priyanshuyadav7643]

​@@Crazytesseracthow many functions in both ?

[@allmyinterests5139]

The speed, functions and new display are a plus but i find the older model way more aesthetically pleasing and actually i think the busier keyboard makes accessing the functions easier. Especially as an engineer I need integrals very often and now with the new model you have to go through the menu to find the option for it. And thats only one example, maybe Ill buy the next model if they fix this there and make it less menu based but for now my 8 years old EX still works fine, just replaced the battery and ready to go for another 8 years!

[@MentionmeIfuGae]

Can you recommend some calculator? All of the ex in my place have been replaced by the cw, and they said that cw is hard to operate 😭 (freshman engineering student)

[@pu11.__23]

@@MentionmeIfuGaesame here bro did you purchase any calculator?

[@traviswalker8933]

​@@MentionmeIfuGaethe EX is not discontinued. I bought a new one 4 months ago.

[@gaius_marius]

Nice review. As an owner of the fx-991EX, I am not a fan of the new keyboard layout or app menu. Instead, I wish they had made other improvements, such as persistent memory and selectable results from the calculation history.

[@EJEuth]

I agree with you. These “impoorments” were NOT for the benefit of the user. If you see my other comments in this video, I believe Casio did these changes to segregate the next generation of users and to make their calculators more difficult to clone/counterfeit.

[@traviswalker8933]

​@@EJEuthwhich is a good thing as counterfeits were getting better for the 991EX series and we're putting users off Casio.

[@EJEuth]

Suggestion for CC channel: As an afterthought of my former comments in this video, I would suggest comparing this CW, an EX (both Casio) with a Sharp one, considering time (keystroke and calculation) to solve 2 or 3 common problems. Regarding the Sharp (also Japan based) I have here in Brazil 2 units of Sharp EL-W516TBSL, having WriteView, 4 Line Display, Battery and Solar Hybrid Powered, complex numbers, with Root-Finder/Solver, 3x3 Sim.Eq., Integral (Simpson method), which is somewhat similar to the discontinued FX-991ES+, now seen in Osalo’s 991ES clone, I guess. Regarding the TEXAS, TI-30XII and TI-36X Pro would be 2 famous options. How about checking the “alternate” / “No name” calculators? Parents and students around the World would appreciate that too. My guess would be to check which AP High School or early Engineering problems are more frequently asked - not for Benchmarking the NumSolver or IntgSolver, but real life set of 2 to 4 problems, as an exercise / homework / short-exam sheet. Could even fold in the future as dedicated “General”, “HS”, “AP HS”, and a “undergraduate STEM” page-sheets. Making a video using the same sheet for a given calculator - one video per model, might be covered in ~10min each. A summary of keystrokes per problem number of menus, and overall time employed, or special tricks to bypass model-specific limitations, or the use of exclusive features, could be in the summary at the end of each video. No one is going to blame if a geek could solve with fewer specialized keystrokes, where the Correct result is #1 feature, Agility probably #2 and Intuitive operation a #3. My feeling is such kind of vídeo would become a success among younger users (and their parents), probably within CC scope or mission.

[@TTV_CowboyCA]

Just bought the casio fx 991cw for comp science math, hopefully will be able to keep up with that course

[@jeekakrishna]

best of luck for the course and learn the calculator

[@aryanmobarakjoy4537]

I bought the CW today and to me the problem is it's a little complicated to use... On the other hand EX is much more handy and easier to use... So I will recommend EX and the features are almost same in both

[@MentionmeIfuGae]

Sadly almost all of the ex have been replaced by cw in my place

[@aryanmobarakjoy4537]

@@MentionmeIfuGae same... I actually went to buy a EX but the only available option was CW... Turns out Casio stopped producing the EX series which is very sad

[@htmlisnice]

@@MentionmeIfuGae there are plenty of people selling thier ex on facebook marketplace at 2/3 the price

[@jimn250]

I agree - I'm not a big fan of the new menu system of the CW. For the older MS, I have memorized my commonly used unit conversions, so I could press shift+CONV and then punch in the conversion. EX/CW have more keystrokes in comparison (although not having to pull off the cover of the calculator to look up the conversion is arguably a better trade-off). I also like to use the CALC and SOLVE (with = X) features to quickly calculate microstrip trace impedances or other short calculations iteratively. Now it's hidden in the Equation app menu as 'Solver'. I am also not a fan of the keyboard layout change, as I have more muscle memory with the older layout.

[@EJEuth]

I mostly agree with you. This CW feature could make sense for high school classes, but the management of functions buried inside deep menus is a steep learning curve, non intuitive and slowing calculations. As calculation speed is mostly influenced of how easy a user can keystroke the functions and numbers, also,choosing the proper format(Fix/Eng/SCI) As an engineer with 40+ years using calculators and nowadays still having more than a dozen, I have mixed feelings about this CW series.

[@jimn250]

@@EJEuth I fully agree. I'm always on the lookout for an engineer/professional tier calculator. I use an Nspire CX II most of the time (purely because I can leave it fully charged attached to the computer rather than use batteries) but eventually settling on Sage or Matlab on the desktop most of the time. I only wish an HP 50g modernization is in the works (apparently Swiss Micros has something) but I wouldn't have my hopes too high for that.

[@EJEuth]

@@jimn250 I just bought a Swiss Micros’ DM42, that will be brought to me next August. If I need more, I would use a HP50G (relearning details). More than that, MatLab would be my best path, I guess. SM & community are planning to launch a WP43, already running a Beta based on the DM42 (rev.2) platform. From what I saw, it will be mostly a super powerful RPN with graphics calculator, very nice and thoughtful. I don’t know if they will add CAS.

[@irishchocolate3872]

I just bought this and it is a very nice calculator. However, my favorite is my TI-30 MathPrint PRO. The ClassWiz 991CW is slightly more powerful but the TI-30 MathPrint PRO is more intuitive and engineer friendly.

[@CalculatorCulture]

Yeah I would make a review of the mathprint pro if I could my hands on one. They seem to be only sold in parts of Europe.

[@alinajmaldin]

@@CalculatorCulture Hey, I can ship one to you if you still need one.

[@rashidbinmansour8319]

When they will do four line screen, similar to Texas calculator Ti36. As engineer I usually repeat certain values for many times in my calculations. I like Texas so much for this feature but unfortunately I get used to the casio 991EX and FE & PE exam in my country don't allow for Texas calculators. (Saudi Arabia)

[@AJ-et3vf]

Great video. Thank you

[@kychoi2653]

There should be some advanced changing for example Shift-[X] to and Shift [division] to

[@EJEuth]

My guess is that Casio did it for ECONOMIC/MARKET reasons: to minimize counterfeiting of 991 former series (ES+, EX, LAX, etc), even for the entry-level ones as FX-82CW with several “no name” brands competing with Casio. Using a new Display (hardware) and new menu-driven hierarchy (software) Casio grants itself 1 or 2 years being headache-free of fake complaints and higher profit margin. It might be a challenging bet, where keystroke simplicity and almost-universal use of former standard platform (Casio, Sharp, Canon, no name, etc.) is pushed aside to create this new menu-driven philosophy. Also consider that MORE KEYSTROKES for one problem solving is in the OPPOSITE direction of those outstanding RPN-based calculators, from the golden age of HP. Now CASIO (re)created a scientific calculator series that has the same lot of functionality, but with much MORE key stroking, for well known high school and Engineering problems, with ENG/SCI and Unit Conv. front and back. I foresee this CW series may help SHARP (as EL-516W) and TEXAS (as 30X expand 36X) both with continuous history memory and a “classic” algebraic keystroke operation most of us already know. I do feel pity for students and engineering colleagues that receive one Casio’s CW calculator as a backup/emergency on the same day of an exam. God helps that one!

[@tanya4777]

Yeah I know right I got the cw one for an emergency from my friend and it took me separate time to figure it out during exam

[@HamzaAleem_Math]

Yes I have same though before I too much used fx991cw but when I practice this calculator calculator this is too much better than ex . It is best calculator more features more intuitive design and handy calculator. I advised you to practice this calculator this is a best calculator. I have both but I like cw and used In my day to day life. And when I define matrix and off the calculator the data is not lost this is the amazing feature and also with some other modes I save my data in matrix when I set data in spreadsheet and give it screen off timer 60 min it means less chance of losing data. This is the reason I love this calculator.

[@fouziasiddique6536]

Which one is better for statistics?

[@moktafizaman9077]

NGL, after using the 911CW, I like it more than my previous 911ES Plus. It's faster, the keys feel better, are much better stabilized, and there are many more reasons.

[@gobemi5372]

Thank's for this video! This new "layout" is a joke. Casio desperately needs designers who have a clue about what they are doing.

[@MICHELSISMANOGLU]

Hi everyone. My Casio fx-991 CW has just one TOOL, that's "undo". Do you know why? Regards from London

[@vahetarayan]

Can that calculator find x?

[@iraqisonic9920]

In the film Termator Part 2 John Conner opens the blade of games with a pocket computer you can explain about it

[@Silanda]

From what I've seen of it, I'm not a fan of this redesign for two reasons: Firstly, aesthetically, I simply think it looks cheaper. The more significant issue is what appears to be the increased menu diving. This same crap seems to get pulled on things as diverse as PC OSs and synthesizers: claims that burying functionality in menus somehow improves "ease of use". No, sorry, but IMO it doesn't; it just makes doing anything slower. Putting common functions under menus is typically one of my problems with using graphing calculators too. I'll take more button based functions any day, and given the amount of complaints I've seen about the entire CW series, I don't think I'm alone in thinking that they're a bit of a misstep by Casio.

[@dubrovink66]

Exactly what i was thinking! Step in the wrong direction.

[@user-xk4wj9hd3l]

The tables & conversion functions are what I'm interested in.

[@ahsanyunas]

There was another one by Casio with round buttons. it was Casio Mini landscape 6-digit calculator with no floating-point option.

[@CalculatorCulture]

Yeah Ledudu also mentioned the pocket mini too casio.ledudu.com/pockets.asp?type=1645

[@srirammeghana6746]

Where can I find exp in this calculator

[@SergamingPlayz]

I dont know why i like calculators more than a computer right now

[@jthorpe4droid]

I'm a bit of a calculator collector, was have tempted to buy the 991CW tonight even thou I have the 991CW, 8GT+ and a HP Prime, I have a question for the fx series, I have a Casio fx-7700GB and it works fine, but just eats batteries when not in use. Any tips, as I like this Cal and I've had it since new, battery contacts are clean. My TI-92 and TI-68 don't have an issues and are just as old.

[@entranceexamvideos]

Where is the permutation and combination in this calculator. I bought yesterday for my exam but i cant find those which are needed to my exam. Ending, i borrowed calculator last minute.

[@saujanyapoudel8910]

Press Catalog, select Probability and scroll down to permutation (or combination)

[@laurenth7187]

What do you think about the x10 fonction ? There is no more EXP fonction, as a notation.

[@saujanyapoudel8910]

The CW's scientific notation button treats powers of ten as separate numbers, giving incorrect results. For example, typing 2*10^7/8*10^9 should give 2.5*10^(-3) but instead gives 2.5*10^15.

[@arthurlam5832]

Under the speed of getting the answer, unless you need Casio to calculate equations, under normal calculation I generally do not recommend this model.

[@talesoftrilok]

The quality of texts on buttons feels soo much better on the EX

[@HamzaAleem_Math]

Yes I have same though before I too much used fx991cw but when I practice this calculator calculator this is too much better than ex . It is best calculator more features more intuitive design and handy calculator. I advised you to practice this calculator this is a best calculator. I have both but I like cw and used In my day to day life. And when I define matrix and off the calculator the data is not lost this is the amazing feature and also with some other modes I save my data in matrix when I set data in spreadsheet and give it screen off timer 60 min it means less chance of losing data. This is the reason I love this calculator.

[@flexu8699]

I like my CW but the only problem I have is the format key, I hate that I have to do 3 clicks per calculation if I want it in decimal form. Over the next how many years I have this calculator, that will add up to thousands and thousands of additional clicks.

[@burjer8921]

u can change the default result form (fraction/decimal)

[@HamzaAleem_Math]

Yes I have same though before I too much used fx991cw but when I practice this calculator calculator this is too much better than ex . It is best calculator more features more intuitive design and handy calculator. I advised you to practice this calculator this is a best calculator. I have both but I like cw and used In my day to day life. And when I define matrix and off the calculator the data is not lost this is the amazing feature and also with some other modes I save my data in matrix when I set data in spreadsheet and give it screen off timer 60 min it means less chance of losing data. This is the reason I love this calculator.

[@user-sy5jo4se5h]

you have to be careful when doing inverse logarithms as the function is not where you expect linked to the log key on other models

[@luisalejandroacuna9879]

Is there a natural exponential function in this calculator? I know you can enter the number e followed by the [x^y] key and then the exponent, but that's slower than the direct exp function. And I don't mean slower to type in, but slower to compute. For example, in an integral using exp (say, e^(x^2) from 0 to 5) it would be faster to use the direct exp function. Do you know of a way?

[@birnodin]

Please test the speed of the fx-991CW vs fx-991EX, is the new calculator faster in sum, integrate, solve?

[@simpleletternote]

Newer CW is faster overall

[@CalculatorCulture]

It is 1.5 to 2 times faster:

[@MrDands]

Getting rid of the engineering and SD keys was criminal. Plus no angle key for complex math. This is not a calculator for engineers anymore. Casio messed up bad on this one. Returned mine, buying an extra 991ex to be safe.

[@CalculatorCulture]

True. I guess the core market is high school kids who wouldn’t have much use for those keys.

[@numbshuvam8207]

You can use angle from Catalog > Complex > Down Navigation Key > OK. Very painful.

[@harini2801]

Where to get 991ex? It is showing unavailable everywhere

[@MrSpec0p]

@@harini2801amazon still has real ones

[@Crazytesseract]

​@@harini2801Discontinued in the Indian market. You can order from Germany but you'll have pay a lot extra.

[@Isaac-gh5ku]

I'm not from UK but from Malaysia, and I WANT THAT CALCULATOR!

[@dimaminiailo3723]

no you do not, trust me. I own both EX and CW, and the former is much better than the latter. my opinion has nothing to do with habit, I swapped fx-82ES for fx-991EX without a second thought, but I doubt I will ever use CW apart from reinforcing my statement on EX being more handy

[@marcocretti5258]

hello, I'm undecided whether to take this calculator or the Sharp El w506 t. What do you suggest me?

[@marcocretti5258]

Also called Sharp EL-W516TBSL .

[@GrigRP]

Looks very inefficient. Too many menus. Extra button presses for the same function. Casio went for form over function.

[@layan_777]

How can I get the absolute value on casio fx991-cw?

[@CalculatorCulture]

The absolute value function is now buried in the Numeric Calc menu of the catalog.

[@CalculatorObsessed]

For an influencing vintage calculator with round buttons how about the 1974 Casio pocket-mini with red LED display. Admittedly not a scientific calculator.

[@AdrianBoyko]

Yep, those little “L” connectors look pretty annoying

[@rikimiki12]

it's ugly and it's also redundant because it's shown on all items, a design mistake no real designer would make. and why there are no colors for symbols anymore? I do like the display fonts of the new model

[@anshumanmishraw]

I have buyed FX-991CW bcz of it's complex.

[@HamzaAleem_Math]

Yes I have same though before I too much used fx991cw but when I practice this calculator calculator this is too much better than ex . It is best calculator more features more intuitive design and handy calculator. I advised you to practice this calculator this is a best calculator. I have both but I like cw and used In my day to day life. And when I define matrix and off the calculator the data is not lost this is the amazing feature and also with some other modes I save my data in matrix when I set data in spreadsheet and give it screen off timer 60 min it means less chance of losing data. This is the reason I love this calculator.

[@anshumanmishraw]

@@HamzaAleem_Math Indeed The FX-991CW calculator by Casio has earned widespread acclaim and a dedicated following among students, professionals, and educators alike. Renowned for its exceptional functionality and ease of use, the FX-991CW stands out as a top-tier scientific calculator in its class. One of the most lauded features of this model is its intuitive interface, which makes it accessible to users of all skill levels. The calculator’s large, high-resolution LCD display ensures that equations and solutions are displayed clearly, reducing the risk of errors and enhancing the user experience. The FX-991CW is celebrated for its extensive range of functions. It supports over 500 scientific functions, making it a versatile tool for tackling a broad spectrum of mathematical problems, from basic arithmetic to complex calculus. This wide array of capabilities makes it an invaluable resource for students in various fields of study, including engineering, physics, and mathematics. The calculator’s ability to handle matrix calculations, vector arithmetic, and complex numbers with ease is particularly beneficial for higher education students who require more advanced computational tools. Moreover, the FX-991CW is equipped with a natural textbook display, a feature that allows users to input and view mathematical expressions as they appear in textbooks. This function significantly simplifies the learning process and minimizes the time needed to familiarize oneself with the calculator’s operations. Users appreciate this feature because it facilitates a smoother transition between learning concepts in the classroom and applying them in problem-solving scenarios. Another aspect that users love about the FX-991CW is its solar-powered operation, supplemented by battery backup. This dual-power system ensures reliability and longevity, making it an environmentally friendly and cost-effective choice. Users do not need to worry about the calculator running out of power during crucial moments, such as exams or important calculations, which adds to its dependability. The build quality of the FX-991CW is another commendable feature. Casio has crafted this calculator with durability in mind, ensuring it can withstand the rigors of daily use. Its lightweight and compact design make it portable and convenient for carrying to classes, labs, or workplaces. Additionally, the well-spaced keys and ergonomic layout enhance user comfort, allowing for extended use without strain. Overall, the FX-991CW is not just a calculator; it is a reliable companion for anyone dealing with numbers regularly. Its blend of advanced features, user-friendly interface, and robust construction make it a standout choice in the market. Users consistently rate it highly, praising its ability to simplify complex calculations and improve efficiency. Whether you are a student grappling with challenging mathematical concepts, a professional requiring precise calculations, or an educator needing a reliable teaching aid, the FX-991CW is designed to meet and exceed expectations. This calculator’s ability to combine functionality, reliability, and ease of use into a single device has solidified its reputation as a beloved and essential tool in the world of mathematics and beyond.

[@anshumanmishraw]

Indeed The FX-991CW calculator by Casio has earned widespread acclaim and a dedicated following among students, professionals, and educators alike. Renowned for its exceptional functionality and ease of use, the FX-991CW stands out as a top-tier scientific calculator in its class. One of the most lauded features of this model is its intuitive interface, which makes it accessible to users of all skill levels. The calculator’s large, high-resolution LCD display ensures that equations and solutions are displayed clearly, reducing the risk of errors and enhancing the user experience. The FX-991CW is celebrated for its extensive range of functions. It supports over 500 scientific functions, making it a versatile tool for tackling a broad spectrum of mathematical problems, from basic arithmetic to complex calculus. This wide array of capabilities makes it an invaluable resource for students in various fields of study, including engineering, physics, and mathematics. The calculator’s ability to handle matrix calculations, vector arithmetic, and complex numbers with ease is particularly beneficial for higher education students who require more advanced computational tools. Moreover, the FX-991CW is equipped with a natural textbook display, a feature that allows users to input and view mathematical expressions as they appear in textbooks. This function significantly simplifies the learning process and minimizes the time needed to familiarize oneself with the calculator’s operations. Users appreciate this feature because it facilitates a smoother transition between learning concepts in the classroom and applying them in problem-solving scenarios. Another aspect that users love about the FX-991CW is its solar-powered operation, supplemented by battery backup. This dual-power system ensures reliability and longevity, making it an environmentally friendly and cost-effective choice. Users do not need to worry about the calculator running out of power during crucial moments, such as exams or important calculations, which adds to its dependability. The build quality of the FX-991CW is another commendable feature. Casio has crafted this calculator with durability in mind, ensuring it can withstand the rigors of daily use. Its lightweight and compact design make it portable and convenient for carrying to classes, labs, or workplaces. Additionally, the well-spaced keys and ergonomic layout enhance user comfort, allowing for extended use without strain. Overall, the FX-991CW is not just a calculator; it is a reliable companion for anyone dealing with numbers regularly. Its blend of advanced features, user-friendly interface, and robust construction make it a standout choice in the market. Users consistently rate it highly, praising its ability to simplify complex calculations and improve efficiency. Whether you are a student grappling with challenging mathematical concepts, a professional requiring precise calculations, or an educator needing a reliable teaching aid, the FX-991CW is designed to meet and exceed expectations. This calculator’s ability to combine functionality, reliability, and ease of use into a single device has solidified its reputation as a beloved and essential tool in the world of mathematics and beyond.

[@hermask815]

As I recall the cw has taken away some of the mathematical features. I use my calculator seldom, pivot tables are what I do nearly every other day, and that’s mostly sums under the hood.😊

[@strictlyyoutube]

Where can I buy the EX?

[@CalculatorCulture]

The 991-EX has been discontinued. You can still buy them new off merchants on eBay but the price has gone up a lot.

[@Daniel-dj7fh]

I like the all black design I just don't know who's gonna benefit from the coin toss and dice roll function..

[@N-methyl1phenylpropan-2-amine]

Honestly not a big fan of the menu system. How is the fx991ES PLUS instead?

[@Crazytesseract]

Do you work at IUPAC by any chance?

[@traviswalker8933]

Its an older and slower model.

[@jamesheseltine8283]

Hi, I am new to Maths and studying my school exams as a mature student. Do you guys recomend I get the CW or EX?

[@CalculatorCulture]

I think you would be happy with either:

[@jamesheseltine8283]

@@CalculatorCulture I have heard so many negatives about the CW I will have to give it a pass.

[@nicalennieee]

​@@jamesheseltine8283I own the pink ver and its very usable but still depending on your level or the functions you need.

[@ShebanFPV]

EX for sure

[@sadmam-lc8fz]

the 991ex was simpler and faster its honestly better in my opinion

[@Snowman_44]

Not bad. The only reasons i didn't choose that one was because a lot of universities didn't put it in their exam allowlist and because i didn't want to learn several new calculator functions right before exams. But i really like it. It seems to have made a lot of things like unit conversion easier. But I don't like the lack of colours on it, make it look old.

[@sillycat_lover]

Just bought the Calc and after reading the comments I am regreting my life choices .

[@newazabir8492]

please give some tutorial & hacks vedio for casio 991 cw

[@CalculatorCulture]

@TheCalculatorGuide does a good job on those types of videos, not sure he's got to the 991-CW yet though.

[@newazabir8492]

@@CalculatorCulture thank you 💖

[@ariabahrami1752]

The calculator have function like sec, cosec or cot?

[@HamzaAleem_Math]

No

[@Crazytesseract]

​@@HamzaAleem_Math It does. Use sin, cos and tan keys to get these functions. They are inverses of these three functions.

[@HamzaAleem_Math]

@@Crazytesseract thank you

[@abdullah-00777]

But present time 991 ex original calculator has become very rare to find.

[@ciao2777]

can it run doom?

[@CalculatorCulture]

No you'll need a fx-cg50 for that!

[@Ahlon1976]

where ist the percent key?

[@chas2077]

You don't need one and no decent calculator should have one.

[@CalculatorCulture]

Yeah the percent key has gone. Personally I don't use the % key on calculators very much, since you it is usually easier to type percentages using a decimal point. eg. with .35 is three keystrokes, whereas 35 Shift Ans [%] is four keystrokes.

[@numbshuvam8207]

Catalogue > Probability > %... 4 keystrokes 😂

[@elainematthews7846]

Overall, as I see it, the CW is a robust and highly capable calculator. Yes, the EX Classwiz js higher on the aesthetically pleasing scale, the CW’s function library is quite extensive and flexible. To see that it’s suitable for engineers and others in scientific disciplines. For it to be on the same caliber as TI’s 30X Pro Mathprint and 36X Pro demonstrates just how powerful this calculator is. For such an advanced calculator, its circular keyboard, nested menu structure, the somewhat busy keyboard nomenclature are worth the sacrifices. If it’s a replacement for the EX Classwiz, the EX will be sadly missed. Overall a 15 out of 10 for me.

[@edan305]

Hello, can you do me a favor and tell me if the Texas Instruments TI-30X Pro Mathprint or the Casio FX-991CW has better readable and brighter Display?

[@TheEddie581]

As an electrical engineer, I cannot say anything positive about this new CW, it is a pain to use. the EX had everything I wanted, the CW is a inferior in many ways. Why on earth did they put ENG under that Format key - just to annoy people with doing 3 keystrokes instead of one? I am glad I still have an ES and EX. I hope they will come with a successor of the CW that address all deficiencies it has in comparison with the older models.

[@CalculatorCulture]

Yeah i should have talked more in the video that’s it’s less suitable as an engineers calculator.

[@Kunk.sk8]

how do i turn it off yall

[@CalculatorCulture]

I believe it will only turn off when the solar panel is covered.

[@ohitsustu1835]

The new cost saving cover is naff.

[@user-mk8yn4xl8v]

Helo sir is it good or not I took fx991 cw

[@CalculatorCulture]

Yes it still a great calculator. Some prefer the previous model though.

[@saherakhatun1458]

I chose complex 991ex for speed

[@CalculatorCulture]

Makes sense

[@jefferson-silva]

They made the UI simpler and the UX worse.

[@jeevar2446]

Im a computer engineering student, there is no multifunction button in this calculator and also there is no clac button , which means i cannot performe sequential calculation and numerical analysis on this calculator. Worst calculator in my opinion. Another problem is they hide eng function in the app.

[@paulna5526]

I purchased one, and I'm very disappointed, it is ridiculous to have to go through a menu to change fraction to decimal on every input, it does not allow you to maintain a decimal format, that's ridiculous

[@CalculatorCulture]

You can also hit shift and EXE to switch between fraction and decimal format.

[@pedroregalla3333]

On Settings it does allow you to set it to output in decimal format by default.

[@faheemali1650]

Can someone tell me how to turn this darn thing off?

[@CalculatorCulture]

⬆ AC

[@faheemali1650]

@@CalculatorCulture thanks.

[@shahzadiqbal9145]

DO YOU KNOW : The CASIO fx-991 has 540 features !

[@faisalahmed1937]

Casio fx 991CW has a serious problem: its approx. equal button (have to use shift button to get it) gives erroneous results. I am using it, its really unexpected and unaccepted. I strongly suggest not to buy it and suggest casio company to withdraw the device from market. If it is any developed country, we can claim compensation.

[@CalculatorCulture]

Interesting. Can you give an example?

[@dubrovink66]

Casio fan since 1978 but this is going in the wrong direction. In general, menus are less handy than direct acces buttons. It compares to touchscreens in cars (less safe). For calculators safety is not an issue, but unneccesary menus just make things more complicated than they are. The round buttons, which i find ugly, are just more marketing B.S. as, at the same time, Casio says the new buttons of the 991 ES+ 2nd edition have a bigger touch-area than the buttons of the previous 991 ES+....

[@konstrakph]

The design is really bad. CW is just a waste of money.

[@youssefmahmoud7605]

New layout feels more confusing and slower than the older layout not a fan.

[@CalculatorCulture]

Yeah that’s a common complaint.

[@astian8028]

Small screen

[@AlexFlores-es9jc]

Con la 82 ms mas que suficiente

[@HSong-qr7dn]

The "upgraded" product looks like art/design people applying "idiot-oriented" design on scientific calculators. I think designers do not even know how to use engineering/scientific calculators, and they assume everyone is unable to use those calculator as themselves. Such a design may be suitable for financial or daily calculators, but high-end scientific calculators should not hide everything in the menu and should not forget to consider typing efficiency.

[@Terzaghi12]

I don't like the new design, it kinda looks like the calculator app on Android phones

[@Crazytesseract]

The layout design is no good. Your videos are good, but I cannot like this calculator.

[@alexuny]

I see this re-design like a low cost production desing (but selling at same EX991SPII price, of course). And it has a poorest keyboard and functions design too, in my opinion. I don't like this CASIO Classwiz movement and design. I'm most fine with the EX... Or an advanced Classwiz MS has better and honest design than this CW in my opinion. An EX-991SPII with EX-82SPII/GTX basic black pattern colors, with more text and lines on LCD configs (and other typpgrafy style like CW or classics LCD??), and CASIO will can take me 25-35 € again 😢😂.

[@Manish_Kumar_Singh]

anyone here who can ship me their EX, used or brand-new from your country? its not available in my country and I will pay a premium to you

[@CalculatorCulture]

There are a lot for sale on eBay.

[@nungky_giantarawanie]

Masih ada banyak di Indonesia

[@michaelroll10]

They managed to ruin the calculator in almost every useful aspect. FORMAT key opens a menu?? no CALC?? no STO?? no selecting options with keyboard shortcuts??

[@prakashhirawat5825]

i have classwiz cw calculator most useless not worth so difficult to use and not useful in numerical analysis so i hate it if anyone want i will sell it

[@Kel-Sang]

Missing ANS is suck a nerf of this calculator, and the ENG button !! To convert to decimal to fractions is a hassle now. And to solve Quadratic equations now we have to go 5-6 exta keys. Such a huge disappointment, i switched back to my 5 yr EX right after a week of using CW. *Boohoooooo casia CW creator 👎👎👎*

[@Manish_Kumar_Singh]

this is terrible, and casio knew that its terrible. their sales on CW was not improving while EX was in the market, like it did for EX when ES was in the market, clearly an indication of an inferior product. *So they discontinued EX and relaunched ES with new CW buttons.* i had to throw away my CW and buy EX for some mental sanity.

[@dfloper]

round keys are a failure. Looks really ugly

[@pyuc]

Hi, which calculator for about 30 € can you recommend me? I need the calculator for computer science.

[@CalculatorCulture]

I'd recommend the previous Casio fx-991EX since it is a great value calculator, and it has direct keys for base conversion (bin, hex, oct, dec) which you use a lot in computer science.

[@arthurlam5832]

I would recommend Casio JP900 model It is a Japanese model 991EX series, but it has an English interface and a lot more functions than 991EX

[@Crazytesseract]

​@@arthurlam5832 No real advantage. You would pay a lot to import one from Japan. It has GCD, LCM, Intg, recurring decimals, Atomic weights and lots of constants. That's all.

[@hoangnguyenngoofficialchannel]

This calculator same as Casio fx-880BTG.