Comments on: Finally, a new HP RPN calculator!

By: Richard Schwartz

Richard Schwartz — Sun, 14 Oct 2007 01:03:23 +0000

The 35s is a fine machine, especially when compared to the 33s.
A few things are missing, however.

First, why not allow every register to be an indirect register?
Where are the RCL T, RCL Y and RCL Z instructions (with corresponding
store and recall arithmetic) and the corresponding exchange instructions
of the stack registers with X?

I think that the 2×2 and 3×3 equation solvers are lame. Get rid of them if
space in ROM is needed to add a few features.

Also, I am looking for a way to leave program garbage in a register so we
can get non-normalized numbers as in the 67 days and unlock the hidden secret
instructions. (What? You think there aren’t any?)

Right now I am trying to time the instructions to see which are
fast and which are slow, and by how much. This will allow faster
programs to be written.

And what about branching? Some branching to a label is S.L.O.W…. But the
user manual is not clear about it.

And the user manual needs to be proofread by a native speaker of Ingrish.

Vectors? Those of us who work in relativity theory need four dimensions.
And quaternions would be realy neato… if we have them, we don’t need
vectors, as a quat is a sum of a vector and a real number… and complex
numbers are embedded in quats.

Somehow, as good as the 33s is, I don’t expect it to penetrate the
educational market. If HP could just get back the technical elite,
that would be a good step forward. Then the educators might be interested.

And the 33s piece of junk is available at Fry’s, but the fine 35s is not.
That seems to indicate a major marketing failure. Too bad, the HP engineers
did a fine job. It is up to US to promote the ideas of the 35s.

By: Bill

Bill — Sun, 07 Oct 2007 04:27:10 +0000

I have been using the HP-35s for a couple of days and some things to report. Lots of memory registers (up to 800 via indirect addressing); programming GTO to program lines (and automatic adjusting when lines numbers change through editing), the classic ENTER key in the right place(!), good key feel, a good display, etc.

Concerns: you must do everything spatial in vectors, and there appears to be no easy way to get co-ordinates out of a vector for separate processing (you’ll have to use dot products with the primary unit vectors), because the rectangular to polar conversion is gone. This is similar to the HP-50g (and 48, 49) approach, but pulling vectors apart isn’t there. If you want to convert a polar representation to a rectangular representation, it’s just a change of display, but a vector in rectangular form is a complex number. This is gonna scare the willies out of some of these basic students in surveying!

By: HP induced Nerdvana

HP induced Nerdvana — Sat, 04 Aug 2007 20:05:41 +0000

I cant stand my 33s which I purchased to replace my 48G which is extremely slow for rapid calculations. The key placement on the 33s is extremely awkward and you need a microscope to see the decimal place.
When I purchased the 33, I was glad that HP had returned to their senses and started offering RPN calcs again. Over the past several years I had been regularly sending HP letters begging them to bring back the old style calculators such as the 15 etc.
I just discovered the availablity of the 35s today and immediately placed an order for 2 of them. On to use and one as a backup. I am pretty rough on my calculators at contruction sites etc. I am anxiously awaiting it in the mail….. I have reached Nerdvana

By: Seth Morabito

Seth Morabito — Fri, 22 Jun 2007 01:07:22 +0000

When I first saw the 35s datasheet PDF, my mouth literally popped open. I sure hope I can get my hands on one of these in the not too distant future!

I’m currently using a 33s for my RPN needs (and a 48SX, 48GX, and 50g for my RPL needs, but that’s another story), but oh my Lord is the 33s ugly. I want to hide it under the table when I use it. The 35s, on the other hand, looks like something I’d be proud to have in my hands.

By: HP About to Start Making Real Calculators Again? : hype index

HP About to Start Making Real Calculators Again? : hype index — Tue, 19 Jun 2007 17:47:18 +0000

[...] 35s shows promise, however, and we’ve got to respect the way it’s getting hype: by being “accidentally” revealed on a partner website for a few hours.Â Nothing creates more buzz in online forums.Â Well done, [...]

By: Eric

Eric — Fri, 08 Jun 2007 16:06:49 +0000

It appears to have been genuine, but to have been leaked prematurely by a distributor. I expect that it will be officially announced and available before the end of August, since HP will want to sell it for education.

By: Hans B PUFAL

Hans B PUFAL — Fri, 08 Jun 2007 13:29:00 +0000

Any comment Eric? All references to the new HP-35s on the HP site have disappeared and my local dealer has no info. Was this a hoax? I find no discussion at the usual places on the web.

— Hans

By: Jo Vandale

Jo Vandale — Sun, 03 Jun 2007 12:51:09 +0000

The original pdf file of the new 35s is gone … can somebody mail it to mee?