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What's the current go-to calculator for electrical engineers?

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tooki:

--- Quote from: kripton2035 on November 07, 2021, 09:45:49 pm ---
--- Quote from: tooki on November 07, 2021, 08:00:43 pm ---Try a different cable. You could have a shoddy or failed cable, or perhaps even one designed only for charging. Or the calculator’s USB port could be damaged, which would be unfortunate.

--- End quote ---
you are absolutely right... I thought the cable was specific to this calculator, but not it's a simple usb to micro-usb cable. I tried another cable and it exited the exam mode !!!
more to know: I did not have to launch the hp connectivity kit for that, only connecting the cable removed the exam mode.

--- End quote ---
Oh really? I stand corrected. I was going by what I read somewhere.

bson:

--- Quote from: Just_another_Dave on November 02, 2021, 09:30:03 pm ---I also use the HP prime, but finding programs for it is a bit harder. Do you know if there is any website dedicated to it?

--- End quote ---
I too use the HP Prime for basic arithmetic in RPN mode.  It's nice because of its backlit display and good keyboard.

I took a look at it for programming and found it utterly useless.  Unlike HP calculators of the past programs don't operate on the stack but instead are expected to prompt for input and display output.  Not exactly an engineering tool anymore.  In fact, it seems the calculator is just another program even if implemented in C and compiled to native ARM code and not part of the "system".  :--

Otherwise my go-to calculator is Mathematica.

Berni:

--- Quote from: bson on November 09, 2021, 10:48:45 pm ---
--- Quote from: Just_another_Dave on November 02, 2021, 09:30:03 pm ---I also use the HP prime, but finding programs for it is a bit harder. Do you know if there is any website dedicated to it?

--- End quote ---
I too use the HP Prime for basic arithmetic in RPN mode.  It's nice because of its backlit display and good keyboard.

I took a look at it for programming and found it utterly useless.  Unlike HP calculators of the past programs don't operate on the stack but instead are expected to prompt for input and display output.  Not exactly an engineering tool anymore.  In fact, it seems the calculator is just another program even if implemented in C and compiled to native ARM code and not part of the "system".  :--

Otherwise my go-to calculator is Mathematica.

--- End quote ---

The TI Nspire calculators are pretty similar to HP Prime.

They are built from various applications like an imediate calculator, graph, spreadsheet, text editor...etc that can open up in tabs to let you quickly switch between them and copy paste data around. One of them is a script editor that lets you write programs in a scripting language (lua i think).I don't think it ever supported running native ARM code, but as always with these calculators people have created a custom bootloader that allows you to do that.

I have the old non backlit B/W display model of the TI Nspire that i used to help me get trough university. The contrast on that LCD was horrendous and was only usable in a well lit room, but then again i also found that useful because i would often cheat by loading up a bunch of text files over USB. Overall it is a pretty impressively powerful calculator. Most of the reason why i bought it over the classical TI-89 or an HP is because it will take pretty much any math problem written into it 1:1 as it is on paper and solve it. No need to put things into correct form, just give it a system of equations with any variable names you want, burry them under complex numbers, exponents, whatever... and at the push of a button it will spit out the solution to all the variables. In the case of a underdefined system it will simply include the unknown variables as part of the result. If you suddenly want to constrain a variable to be pure imaginary then you simply add another equation to the system that says Re(x)=0

That being said as impressive as the capabilities of that calculator are, it still was kinda cumbersome and slow to type in stuff. So i kept a regular scientific calculator around for the quick easy stuff. These days even that calculator is gathering dust because i use SpeedCrunch for everything now.

armandine2:


Museum of HP calculators has some good HP Prime programs -

just programmed BESS1 into my HP Prime - simple program for Bessel functions of the 1st kind.

tooki:

--- Quote from: bson on November 09, 2021, 10:48:45 pm ---
--- Quote from: Just_another_Dave on November 02, 2021, 09:30:03 pm ---I also use the HP prime, but finding programs for it is a bit harder. Do you know if there is any website dedicated to it?

--- End quote ---
I too use the HP Prime for basic arithmetic in RPN mode.  It's nice because of its backlit display and good keyboard.

I took a look at it for programming and found it utterly useless.  Unlike HP calculators of the past programs don't operate on the stack but instead are expected to prompt for input and display output.  Not exactly an engineering tool anymore.  In fact, it seems the calculator is just another program even if implemented in C and compiled to native ARM code and not part of the "system".  :--

Otherwise my go-to calculator is Mathematica.

--- End quote ---
They make no secret of the fact that its math engine is based on the open-source Xcas. I don’t know the exact software stack, but I actually doubt it’s native ARM, since the exact same code runs on their desktop (Intel) calculator simulator, so I think there’s some abstraction layer.

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