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    Veering slightly off topic, I appreciate, but: has anyone actually used one of these? I love my HP-48gx, but I wouldn’t be averse to upgrading to something a bit more powerful if I didn’t have to give up keys or anything. I’ve been loathe to upgrade ever since my abortive attempt at using a 49g+.

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      I’m curious as to what you use these calculators for, where upgrading would actually be a net win over your current kit? I haven’t touched my TI calculators (an 83plus and a TI-86) since 2001(?) and even then it was for one specific class, and checking my work, not doing the work.

      (edit: I’m making the assumption, based on previous interactions with you, that you’re still a software engineer, and not in a role that necessitates complex mathematical models – though, even then, I’d assume you’d use NumPy and friends…)

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        Two things. First, I do a reasonable amount of volunteer teaching and tutoring, and having a physical calculator is really handy for that (and kids like a non-TI for that, too). Second, when I’m doing retro video game work, checking bills, etc., I prefer using a physical calculator. I’ll use calc-mode in a pinch, but I just really prefer having the dedicated physical object. Even the 48 is overkill for either task, but I like the larger screen and RPN.

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          Right on! Thanks for explaining!

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            I mostly stopped using my HP graphing calculator after I got an HP 35s. It’s pricey for what it is but I really like it for general calculation, for some of the same reasons. And for anything more involved I turn to NumPy or Mathematica.