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TI-89 I own a TI-84 (see Undo's answer), but my school provides students with TI-89s (TI-89 Titanium, specifically) for math classes, which I find to be much more useful. I used it throughout my AP Calculus AB and AP Calculus BC classes, as well as for other AP sciences. It's quite handy. •Last for a reasonably long time (measured in weeks with ~1hr/day ...


7

I've been using the TI-84 Plus Silver Edition for the last few years: Last for a reasonably long time (measured in weeks with ~1hr/day of medium use) on batteries, I don't want to be feeding it all the time I've gotten months at a time out of it, but I haven't been able to get a good idea of the real maximum battery life on it because I replace the ...


4

I have a Bosch DLR165, which appears to have been produced around 2010. It's possible that I purchased mine that far back, or from eBay in later years. I found only one in today's eBay listing, but based on my experience with this one, I'd purchase a newer Bosch product with confidence. The manual lists the maximum range at 50 meters, within your ...


1

Given that you're already familiar with the TI-83, I suggest considering the TI-89 Titanium. In language and UI design it's a descendant, but it is “modernized” in a lot of ways and has many additional features. Easy way to convert between hex, dec and bin bases, with a few button presses rather by than executing a custom program. You can enter numbers ...


1

Have you examined the HP50G graphing calculator? I'm a fan of RPN (reverse programming notation) and I'm aware it's not for everyone, but I've found it rather useful for simple to complex tasks. One can find a rather comprehensive set of manuals on the HP site. Over the three listed, there's nearly 1800 pages, far more than I could peruse this evening. A few ...


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