| I am partial to 48sx in Android, I find Droid48's UI somewhat uglier. Also, to answer OP's question: I use the HP48 emulator in my phone very frequently. I have a solar folding 4-key Casio on my work desk which I also use since it is less distracting to fold it open and do some quick calculations there instead of opening a Python interpreter or the scientific calculator app on the computer. I studied industrial and electronics engineering at university so I have used and abused several Casio fx-82, they are ubiquitous in Spain starting from high school. At uni, I bought an used HP 50G which saved my ass in more than one exam, being able to store equations and having only to input the coefficients saved a lot of time and errors. The programming capability and symbolic math were also very handy when dealing with big matrices. I remember turning a long and messy electronics nodes problem that took half an hour or more to solve by hand into a short program that solved it almost instantly for arbitrary matrix sizes. Having to program my own solution also meant learning the procedure in the process, of course! Not cheating! I have been meaning to build a lithium battery pack for my 50G, it is true that it eats batteries. I used to buy a new pack before exams just in case. I have a bunch of harvested li-ion cells from disposable vapes that would fit the bill perfectly, just add a TP4056 module, a regulator and some CAD work for a printed enclosure. And a bit of free time, of course. Curiously, here engineering schools are (were?) partial to HP calculators, TI are not as common to see. My boss still has his 48G on his desk and uses it frequently. I guess it becomes second nature when using it so much during formative years, and I definitely did. Being fast and precise on your calc could bump you from almost passing to barely passing. |