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Cyber_Cat
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Ask HN: Do you still physical calculators?  Hacker News

Yes, I have a Casio fx-9750GIII and I love it. I still haven't found an Android app or website that can do everything that I need (basic functionality), but in general:- I need physical buttons. I often find that on touchscreens I mistype something and I don't notice.- The history feature. Maybe I want to do a serial task or calculation, and I can just replacecorrect one of the formulas in the history and it automatically recalculates all of the expressions that came after it.- I have written some micropython code utilities for the calculator and I use it all the time.- I don't want to context switch to do a quick calculation. On my PC I have to open up a new terminal or a website (I might be offline, so I have to hotspot and then connect the wifi and ...) and interrupt my existing work or I have to frequently switch between a PDF or latex or whatever that I'm working on.- Typing out sin or np.sin or sin-1 on PC is both longer and more error prone. It gets very frustrating very quickly.- The numerical solver is a godsend. Try solving for the roots of an expression like xex 10 on your PC without internet. Or with an android application. On my calculator it's just a few dedicated button presses. On the PC, I have to use isympy and typeout nsolve(Eq(x exp(x), 10), 1), and you wouldn't even get a proper graphical display of the expression while you are typing it.reply

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