LogFAQs > #936922141

You mean an actual calculator and not an app? I have several that I use, including a TI-5160 II adding machine and a bunch of cheap Casio scientific calculators.

I have an HP67 handheld programmable calculator and an HP97 desktop programmable calculator, but the NiCad battery packs in both are totally shot and they aren't designed to run off AC. I would like to fix them and find out if the magnetic cards I have are still readable.

For my phone, I use a couple of apps. For a general purpose calculator I use Office Calculator Pro, which has a tape function. For scientific calculations I usually use MathLab's Graphing Calculator, though lately I've been playing around with Microsoft Math Solver which lets you write out your formulas instead of just typing them in. Mathlab handles multiple formulas much better, however.

On my computer I use CalcTape for most simple calculations. It has a tape function which is always useful for doing things like taxes, and it saves your tape between sessions. When I need a fancier calculator I use Calc98, a very old but still functional scientific/financial/programming/conversion calculator. Or I use WolframAlpha.

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