39 replies to this topic

[qwerty841]

how much is it going to cost?

[verticale]

fx 82es? What model is this? Never seen before.
I see has complex mode..Any formula memory?
Hi Sergei..I saw your site...very intersting...I didn't know that soviets made calculators on their own...

[verticale]

I always ask to myself, why doesn't Casio make all his new scientific calcs with:CMPLX mode, engineering notation(it is very useful!!), and a bit of formula memory????
is it so difficult to leave old (and useful) functions in newer models????
I do not understand....

For Sergei: which calc model your image refers to???? fx991es or fx82es??? I can see CMPLX mode is present..

[verticale]

I think that this model does exactly the same things as fx570ms and fx 991ms, which are identical except for the solar power.And these also have engineering notation.
The only difference I can find in fx 991es is the "natural display"...maybe they could also product a model fx570es, so we have perfect correspondance with past models...

[casiokaki]

getting the ES series is a bit difficult...my friend works for a company that distribute Casio calc also say his boss relunctant to sell the ES series cause MS is doing very well and the ES is 20% more pricey since Casio's selling price is that much to his company.

A teacher friend of mine comment that Singapore sort of disallowed this model because of the natural display..like sqrt(8) can be displayed as 2xsqrt(2) and also 2.828427...also Hong Kong too. Thats why if your countries is not selling it it is possible that the distributor knows it is not allowed for high school exam so they are not importing...

Verticale you said why not a bit of formula memory in the calculator...if that is so then the Casio scientific calculator would not be selling at all such features willl be consider programmable and many markets are not open to students using programmable calculator.

[huhn_m]

Germany offers nearly all models.

If you understand german or have a good translator then try:

www.dynatech.de

I also think it has global shipping.

[Lovecasio]

Hi.
ES serie has been available in Vietnam for months. My sister bough it at the price nearly 20 USD.
When I asked the seller, he said ES series is "harder to sell" than MS series. It is true that 99% of the students in my country use Casio calculator, and MS is at the top of purchasing. Vietnamese teachers don't allow using some type of calc like AFX or ClassPad (but I still have one, I just use it at normal class, not in exam ).

[Lovecasio]

Hi.
It seems to me that most of you like this new calculators. However, I think it is OK to by fx 570MS or fx 991MS. After a day borrowing fx 991ES from my sister and try using it, I found that it is not much different from fx 991MS. I was attracted because of its good design and ability to display natural format.

Here, I list something that fx991 ES does better:

1) Natural input.
2) Natural display (certainly not complex expression. Ex: pi; 12+4sqrt(2))...
3) Faster in calculating Integral, derivative, and can convert result to fraction (MS series cannot do it).
4) Table function.
5) Good menu design.
6) Better in numerical equation solving.
7) Easily in working with Matrix and Vector

Here are something that were missed

1) Engine display.
2) Cannot display natural format when solving quadratic, cubic equation (I mean when the result includes sqrt())

Well, it's up to you to decide what calc best suit, but I think you will not regret buying MS series.

[casiokaki]

Lovecasio,

not to forget the ability of this ES to do logarithmic function calculation of other bases. For example now we can do log(5,2) at the calc and the four operation of log like log(5,17)+log(56,11) for example.

Another good point is that we can switch off the natural display and use the normal MS linear display. Hey come to think about it, it is like having 2 calculators in 1

[verena]

Apparently, the calculator redraws the screen after every key press, and as the expression being entered becomes long, it takes longer to redraw. If the user presses the next key before the redrawing from the previous press has completed, then it is possible that the expression will be incorrect after the next redraw.[/quote]

That is old news, calculators don't have a keyboard buffer like computers do.

Every now and then Casio is smeared by someone for not having a keyboard buffer. Especially the Texas Instruments crowd is always in a hurry to find anything wrong with a Casio that beats their models hands down in functionality, beauty and user friendliness.

A few years ago in the Washington Post there was an article about "Casio giving wrong results" they took a real simple non-scientific Casio, I forgot the model, pressed "2 x 2 x 2 =" real fast and instead of "8" the answer was ... "16".

Between the lines it said, stay away from the jap crap, better buy a good american Texas Instruments.

What happens (and the article did not bother explaining): as soon as you press the second "x" the Caiso will calculate the first "2 x 2" and this takes a bit of time. During the calculation, the third "2" is pressed and the calculator doesn't catch it, because it's busy. Then, when the answer is there ("4") and "=" is pressed, the calculator thinks it has to multiply "4 x 4" and does such correctly.

Well guess what, I bought a Texas Instruments TI-1726 (my one and only TI, wasted $3.50 on it) and it does exactly the same: "2 x 2 x 2 =" not even that fast, and it says "16"....

[HabanR]

hi, i want to buy calc for my study - electro university... i need complex num. andI read that is bad "support" that function... also it doesnt known complex matrices, or matrices with 4variables (lines?) or more...
has it most function for my study or i must buy expensivest calc ?
thx

Don't waste your money buying this calculator.
1) It's buggy. It makes error in conversion between rational<->fractional results. Default answer mode in "natural mode" is fractional.
2) It's buggy in simple complex number calculations e.g. i^4 results to the math error...
3) Work with this calculator is very slow as useful operations are deeply hidden in submenus and every real work with this "feature" is really slowwwww.
4) It can't work with complex numbers in matrices.
5) Matrix implementation is very simple and work is very slow see 3)
I think that this calculator is useful for a primary school, useless or even "danger" for Electrical Engineering...
Buy at least Casio Fx9860G. With the latest downloadable firmware 2.0 it can very comfortably work with complex matrices

[sujoyn70]

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