Have you ever tried the smath studio ?
viewtopic.php?f=58&t=23878&hilit=smath
It's looks like a MathCad. Not a simple calculator to push the numbers
It can handle matrix, vector, etc
Symbolic and numeric differentiation (!!!)
of course, it is graphical
So its very cool

I am looking for the perfect calc too!

I'm an engineering student and I am used with the HP scientific and graphic calculators (I have an 28S, made 20 years ago ). So, before I install tons of different calculators on my PPC, maybe you could indicate me the best.

I want all that features that i have on my HP:
* RPN, stack with 4 or more lines!
* Calculus, numeric and symbolic
* Numeric solver of equations and systems of equations
* Programmable and with custom functions
* Graphic ploting
* Matrix algebra
* Regressions and statistic stuff
* ...

By the way, I also want the HP scientific calculators ROMs for ARM PPC!
Emulating them was one of the purposes when I bought my PPC. In other sites i've found an emulator, freeware, that looks very nice but I can't find the roms anywhere!
I believe someone has them...
I guess I can reward someone for the rom of the models 28S, 48, 49 and 50. Since I'm new here I dont know how much should I pay for that... but I could

oh, it would be awesome to emulate the 28S on my Ipaq

I use Hi-Calc , user interface is awesome. And a lot of functions. I found everything I need.

Well, I've tested a lot of calcs and, by now, the one that looks best is Spacetime... although i don't know if it is as practical as the real HP calculator (i really love RPN)

Please, anyone have the HP 28S rom?
WRZ$ 20,00??

[ingenious]

Does anyone have SpaceTime for Windows (desktop) ? I love the program and would like to use it for simple plotting on my computer.

$20 WRZ award

Hi-Calc,

No question about it!

[AeroIceman]

Math Tablet, it takes off where every other calculator leaves off; engineering!

And why not use an emulator?

Code: Select allhttp://www.hpcalc.org/hp49/pc/emulators/
http://www.ticalc.org/archives/files/fileinfo/309/30978.html

but spacetime hasn't integral,differential,equation
some calculator that has also these?thanks

maybe spacetime + hicalc is the best combination

noone here who uses RealCalculator?
My combination is Spacetime w/ RealCalculator