I have always said that when my last 41 dies, I am retiring. I'm sitting here with two on my desk, one in the truck with the leather case, and two in storage that I picked up last year. It just now dawned on me, I won't ever get to retire. Thanks alot for ruining my day!!;-)
James
Started using a 45 in about 1974/5 then a 55 before I got the first 41, I think I have 2-3 of them now, but not all work. I of course also have a 48 and more recently a 35S that I needed for my last exam because the 48 wasn't allowed. I still have the 45 and 55 too and I think most of the documentation.
Was into programming the 55 and 41 big time back in the day, never programmed one thing in the 48.
The 41 was a game changer and probably the most used and loved HP handheld ever...
SHG
I'm still using my 41 - but its getting harder to find batteries for it
I get mine at
Home Depot whenever I need em.
Jim,
Go to a Sporting Goods store that sells firearms for sport. My electronic earmuffs for target shooting use type "N" batteries, the same as an HP-41. I think that's a pretty common battery type for electronic earmuffs.
Safety earmuffs for use around airports probably also use the same batteries.
Just suggesting ...
Thankx guys, those are good suggestions. I'll try the local hunting & fishing store. Fortunately we dont have Home Depot in New Zealand.
I use mine every (work) day, and I have a brand new one in the original box. Best desktop calculator ever made! I wrote a number of programs for it, including a tilted plane curb return solver and a slope-staking program.
You can find every publication imaginable, as well as a very nice emulator for windows at:
Sorry - couldn't get the link to post correctly...
Too funny - I told myself the same thing, but still have a brand new one in the box!
At one stage (early 1980's) HP ran a library of publicly submitted programs for the 41.
I gave them a number of geodetic conversion routines, Transverse Mercator to Spherical, Spherical to NZMG and so on.
Does anyone know what happened to that library?
Practically everything that HP had in its applications library for the HP-41 is available from the i41CX+ application site for the iPhone. I think it's all there and it's free. (The "app" itself is not free, but all of the library software is free.) With the memory capacity built-into the iPhone, you could probably hold the entire library in your iPhone if you wanted! They even have ways to download overlays in the software as well as instructions on how to make your own custom overlays.
Pretty slick stuff, if you want to invest the time to learn all of that ...
Check Amazon or ebay for batteries if you can wait a week or 2 - very cheap.
I use my 41cx frequently - it's on my desk as well as the 15c for simpler math.
never did like the 48sx as much, altho we did use it with TDS card as a data collector 20 some years ago. I have an LSIT here in the office who will inherit my HP collection when I retire - he digs the old stuff and uses it too.
RPN is a beautiful thing. I missed the 41 by a few years, buying my 48 in 94, right out of high school with my own money. I use a 49g+ now for everything. It's amazing how quickly you can write out a little program to simplify a process. I miss the days when user programming was supported by devices and computers such as HP user RPL and Microsoft's BASIC. Not so simple anymore.
I find this all very interesting.
As someone who is younger than the majority here I started with a 48 and now use a 50G with ( http://www.quickclose.com.au/softindex.html ) software on it.
Works like a charm.
You can find everything at the link I posted above... (and I guess it does work now.)
i41CX+
Most amazing app ever!
The delay in the keystrokes of the HP48 was a major PITA.
:good:
I agree. Some of the buttons, bells, and whistles on software these days are very nice, but it shouldn't come on the heels of simple programming to have a calculator or computer do what you want done in a simple formula and with knowledge of exactly what math steps are being taken.
That was one of the real beauties of the HP41. You could control the programming, it was simple to create a program and many of the hardwired keys were extremely efficient (at least for surveyors). I loved the simple hms+, hms-, p->r, etc.
It was in the 50g too until I found this
500
->KEYTIME
This changed the key response to 500 milliseconds. You can put whatever you want as the number with 1000 being 1 second.
Not sure if this works with the 48 but worth a try.
HP-41 Calculations Journal
I may have a set of these somewhere.
If I run across them I will attempt to scan.
Might there be a place to "store" them?
Met Joe Bell several times.
