WTB Hp Scientific Calculator

I've got an HP 11 and HP 35s I won't selling. I have also had a 42, 48gx and 28s in the past but sold them all on Ebay years ago. Good luck with your search.

Now that I always have my smart phone with me, I've installed that paid version of Realcalc: https://play.google.com/store/apps/details?id=uk.co.nickfines.RealCalc and never looked back. I always have a virtual RPN calulator with me and haven't touched an actual calculator in years.

I also have free42 on my phone and use it all the time on my desktop machine: https://thomasokken.com/free42/

 

RPN.. I tried, I failed and went Casio..

 

For the life of me I cannot imagine why a Registered Practical Nurse (RPN) would need a 11 Horsepower calculator, let alone 15 HP or 35 HP.

That math is wayyyyy beyond me. Interesting though.

 

I have a TI-30X11S if that does anything for you. I think I still have the instructions for it. Just pay postage. I know nothing about scientific calculators, this was required for a math class I needed to finish my degree. I also have a Casio fx-115ES
You can have for postage. One of the other. No idea where I got this one. I need to keep one or the other as a calculator.

 

I have a few of those slide rules Howard.
I keep a wooden one in my toolbox at work, anytime someone asks to borrow my calculator that is what I hand them.

 

I can actually decipher my old wooden ones
And do basic math, have a more modern double slided one that reads on both sides. It just hurts to even look at.
And to think, that's how we landed on the moon.

 

It's a lost skill.
I taught myself the single slide by already knowing the answer and went from there.
The double slide/ double side is a whole different critter, I can't even find the single slide answers on that one.

I'm as lost as the poor kid I was trying to teach vernier calipers to the other day.

 

I used a HP 41CV for a couple decades with the stat/math pack modules. I still hate anything other than RPN. Way more efficient entry. I use my wife's 32SII now but still like the 41 key board better. I remember well my first meeting with a HP35. Surveying roads for the Forest Service about 1972. It was heaven. No more trig tables and hand cranking-------

 

Me too. I even use the widget on one of the home screens so I always have quick access.

 

I remember writing a command line RPN calc once. I think i did it in HLA or something. I wrote one in visual basic years and years ago so i could learn something, i dont remember what i was i learned now tho.