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What calculator do you use ?
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necessaryevil:
I have a TI-83:


But I don't use something like that often. In highschool we need mostly mathematical proof, as is on our university. I even remember one exam in wich we had to do an iterative calculation without advanced calculator!

In my university, an advanced calculator (by which I mean programmable and with graphic display) is allowed, but usually it don't is beneficial since you have to provide mathematical proof.Or we use excel.

So most of the time I use this for a calcuator:


It has full functionallity and keys which don't get stuck. Since I use it the most, I can work the fastest with this one; which is essential for my exams. What I don't like is that you cannot turn of the thousands separator - this was possible with the previous edition which I killed or lost. You can choose between a dot and a comma, I hate this, it is easy to read it wrong or confuse those; I would have preferred a space or no separator at all.

 
JohnnyBerg:
I use a TI84. Z80 inside  :D

cosmicray:
HP-15C, plus I have a few HP-12C floating around here somewhere.
gildasd:

--- Quote from: JohnnyBerg on February 17, 2015, 09:20:23 pm ---I use a TI84. Z80 inside  :D



--- End quote ---
There's a new model, with an eZ80 inside.
The one made for the French market is very interesting due to it's exact maths engine (but no CAS - for now).
It now has no more disadvantages to the CASIO equivalents.
dannyf:

--- Quote ---So most of the time I use this for a calcuator:
--- End quote ---

I have a fx-82 from early 1980s and it still works.

They are not super accurate, however.
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