Casio FX991EX

[Albert Chan]

Quote:Just the shown result. It's basically just a textual copy and paste operation.

Too bad. TI calculator sounded almost perfect.

Have you tried to prove it is really a textual copy ?
The "tape" might had the full-precision results memorized.

On my iPad, I use sci:pro calc.
It also have a "paper tape" you can grab previous result.

Although the grabbed result look like a textual copy, it is actually in full precision:

Quote:Sci:Pro Calculator History

9 SIN COS TAN =
0.0174549999

0.0174549999 ARCTAN ARCCOS ARCSIN =
9

9 - 9 =
3.7358621062e-33

All intermediates were grabbed from the tape, then minus 9, for the calculator forensic test.