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stoolpigeon 26th July 2007 08:00 AM

Calculators
 
I've been using my daughters calculator to help a friend with their small business but even though it has "everything" I wish I had my old HP with reverse polish notation.

I know there are some computer simulations but can you still buy a hand held calculator with this feature?

If nothing else we will see who the oldtimers are!!!!!!

richie00boy 26th July 2007 08:30 AM

My dad used to go on about this on hiw work calculator. What is RVP again? I't been many years since he explained it to me. I recall it's something to do with you put the numbers in first then press what function button you want?

stoolpigeon 26th July 2007 09:08 AM

It's easier to do than explain but say you want to add 2 and 3 on a conventional calculator you would press 2 + 3 = but on the HP it would be 2 enter 3 +. What you are doing is putting 2 into a registry where it can be operated on.

The advantage of this system is being able to do long calculations without having to use memories. Once mastered it is really quick and conventional calculators seem very cumbersome.

theAnonymous1 26th July 2007 12:50 PM

Here is a modern calculator with RPN......

http://cgi.ebay.com/BRAND-NEW-HP-33S...QQcmdZViewItem

stoolpigeon 27th July 2007 02:45 AM

Thanks, I didn't know they were made any more.

And it's a model 33S and I'm sure my oldie was a 33C.

Conrad Hoffman 27th July 2007 04:01 AM

The later 33S isn't bad. The earlier 33S had an impossible-to-see decimal point and (I think) some software bug. The goofy chevron key design wasn't necessary, but it works ok. I prefer my old 32 series, though those also had some obscure software bug. These weren't too expensive way back, but NOS or mint ones were going for insane high prices on eBay a while back. IMO, RVP can't be beat, but modern engineers are no longer familiar with it. There are also a couple HP copies that run on the PC if you search around. I think there's also an HP calculator forum.

BudP 27th July 2007 04:46 AM

The TI 59 crushes all!!!!!

Old timers indeed!!!!

Bud

stoolpigeon 27th July 2007 04:57 AM

I am still coming to grips with the idea of a calculator forum. Do they hot them up?

Is there a slide rule forum?

oshifis 2nd August 2007 02:07 PM

I use a HP 45C regularly. Nice small gadget with pouch, programming manual, user manual (two large volumes), charger, non-volatile memory inside... RPN and the stack register make calculations very quick once you used to it. HP made damned cool stuff before they went in the PC/Printer business...

jackinnj 2nd August 2007 02:12 PM

I have been using an HP-41 since the early 1980's -- although the original HP-41C was replaced by my employer with a HP-41CX when a co-worker spilled coffee all over it. I have the EE programs as well as the financial and statistics packages.

TI-59 is a great device - and is serially capable. The HP-41 used the HP-IL interface which will hook up to a HP 3468 DVM!

I also use an HP48G but find the HP-41 easier.

Whatever happened to books of logarithms and slip-sticks?


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