Overall, good calculator Natural Textbook Display FX-115ES Review

It's a great calculator. You can read find out what it does from the specs. Yes, it does a lot.

Annoyances:

All clear button, or turning the calculator off... Clears the stack, AND ALL HISTORY. (neither ti30sx multiview, or Sharp 516 have this issue). Everything. You walk away for 5 minutes, come back to turn it on, ALL YOUR CALCULATIONS ARE GONE FROM HISTORY. I don't know what casio was thinking. Drives me nuts.

The "E" button is replaced by a gimpy "x10^x" button, which prints a very annoying "x10" characters in smaller font. It acts just like an "E" character, but just looks stupid.
Instead of "4E34", this calculator shows "4x1034" with "x10" part slightly smaller. It really looks stupid, it's a half-ass conversion to full scientific notation, which doesn't convey clearly the actual scientific notation, and on top of that doesn't look right.

Of all the important functions, Casio chose to put "STO" (memory store) as a 2nd function. Interestingly "RCL" (recall) is the primary function of the button, but it's not even necessary, because "alpha" key does exactly the same... So there's 2 buttons duplicating the same function, and the important "sto" got shoved away into 2nd function. Does casio even have engineers or beta testers? Any attention paid to ergonomics? Why not put the whole number pad into 2nd function while they're at it, making their calculators more difficult to use than necessary.

If you have a fraction, you MUST press "fraction" key BEFORE entering the fraction.
So when entering 2/3, you have to press [frac],[2],[->],[3]... you canNOT enter [2][frac][3].. it's not intuitive, and drives me nuts every time.

I'm unhappy with unit conversions as well. The unit displays no way to look up conversions or constants without looking at the cheat sheet on the back cover. I guess you're supposed to memorize the meaningless codes for each conversion and constants that you like using (?).

Another weirdness, is that to enter sinh, you press [hyp] button, but then you have to choose the function from the menu! WHY? Why didn't they route you to the regular sin,cos,tan after pressing [hyp] to finish the command (just like they do it on every other calculator).

It's an alright calculator otherwise. Yes, it's pretty-print, and it does numerical integration. Does matrices, imaginary and vectors. I'd recommend the Sharp EL-W516B Scientific Calculator with WriteView (Black). Pretty much does the same thing, but without those annoyances. Ti-30xs multiview is a more userfriendly machine, but lacks most of the advanced functions (solve, int,deriv), if you don't need those, I'd recommend any of the current multiview TI's. Or wait until TI-36x pro comes out.

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