Electronics > Beginners

EE Pros: Is RPN still relevant?

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bitseeker:
Not that I could find. Everyone has N/LR1 in Alkaline, but not NiMH. Got links?

aargee:
I'd like N size rechargeables as well, the last ones I ever saw were Radio Shack branded Enercell NiCD cells.

Still use my HP-11 and HP41 regularly. Really kicked that I passed up on a bargain 'class set' (30 or so calculators as a class set, used in high school) of HP 11 calculators many years back.

eugenenine:

--- Quote from: bitseeker on March 07, 2017, 04:14:22 am ---Not that I could find. Everyone has N/LR1 in Alkaline, but not NiMH. Got links?

--- End quote ---

I see the first amazon link goes to one that is out of stock

second link was https://www.batterybob.com/products/5580-n-size-rechargeable-2-pack-n-360nm/ looks to be in stock though I don't know who battery bob is :)


Interstate has retail stores in some places now.

http://www.interstatebatteries.com/Products/RT/PID-ASC1055%28Other+Products%29.aspx

The 'also fits' page gives a good laugh if you read about the middle of the list, I didn't know motorola made those types of products :)

MrAl:

--- Quote from: David Hess on March 06, 2017, 07:37:18 pm ---
--- Quote from: MrAl on March 06, 2017, 06:50:10 pm ---They are all on the sidelines now, now that i have software for the PC that i wrote myself and also some that i downloaded, and none of those advanced calculators, even all taken together, can even come close to what i have on the computer these days.
--- End quote ---

I use Mathematica but in parallel with my RPN HP50g.  A computer and even PDA lacks the convenience of a dedicated calculator when I am designing on paper.  The calculator is portable, I don't have to worry about the batteries dying, and it has a superior user interface unless something much more complex is being done and not even then sometimes.  Oddly enough it is often faster as well although the 48 MHz ARM based HP50g is slower than the 4 MHz 4-bit HP48g that it replaced.

It looks to me like HP is leaving the calculator business so I suspect RPN as used as a calculator interface will finally succumb.

--- End quote ---

Hi,

Yes the algebraic type software does make life easier.
I think i used the HP49 something.

Wow HP leaving the calculators?  That's nuts.  That's how the world changes i guess, and some changes are not good.

MrAl:

--- Quote from: eugenenine on March 06, 2017, 07:52:31 pm ---
--- Quote from: MrAl on March 06, 2017, 06:50:10 pm ---They are all on the sidelines now, now that i have software for the PC that i wrote myself and also some that i downloaded, and none of those advanced calculators, even all taken together, can even come close to what i have on the computer these days.

--- End quote ---

When we all used calculators you couldn't fit a computer in your pocket.  One of my early projects was making a data acquisition board for my 48sx.  I gave up on that project after a while when you were able to buy DMM's, DSO's etc that could communicate with a PC/laptop.

When I learned that forth was postfix I started looking into it, before I wasn't interested as I though it just another language.

Now a days I don't use my hp as much as I would like but the feel of the keyboard is still there.  Its like asking someone why they have a manual transmission.

In reality its probably not relevant much anymore, I still prefer to design my wooddorking  or schematics on paper, never got used to cad either.

--- End quote ---

Hi,

Yeah i used calculators when my only computer was a TRS80 ha ha.

I dont think i picked up a calculator for a year now.  The last calculator i used was actually on the PC computer, a virtual one.  I used to use the Windows default calc a lot, but then wrote a program to do all sorts of stuff and then a very simple calculator for just banging some numbers out, which i use mostly now.
Most of the other stuff i do now requires an algebraic system anyway so i have to use that now, and i only have that for the PC right now.

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