HP Forum Archive 14

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HP-41cx Message #1 Posted by Dave on 19 Feb 2004, 1:10 p.m. I have a HP 11c which a triangle solution program can be programmed in through various keystrokes. I was wondering if the same type of program can be programmed into the HP-41cx. Thank you.

Re: HP-41cx Message #2 Posted by Valentin Albillo on 19 Feb 2004, 1:19 p.m., in response to message #1 by Dave Certainly. The conversion is easy or else you can create it anew for the HP-41CX. Most any 11C programs can be readily adapted to the 41CX as long as they do not make use of 11C's functions or characteristics that aren't available in the bare-bones HP-41CX, such as: - random number generator - gamma function - linear regression - hyperbolic functions - indirect GOTO to a numbered step (not to a label) - etc, etc Some of these characteristics could be added by using certain ROM modules (not the indirect GOTO to a numbered step, for sure). Best regards from V.

Re: HP-41cx Message #3 Posted by db(martinez,california) on 19 Feb 2004, 11:29 p.m., in response to message #2 by Valentin Albillo Dave; If you like programming please ignore this. The easiest way is to find somebody in your area who has the math pac or the math-stat pac and just copy the routines (sss,ssa,asa,sas,ssa). You'll have to change the xroms to exq's but that won't take long and it's easy if you walk through the program, one 41 with the pac installed and one with the coppied program. The other way is get hold of the D'Zign Software's "Surveying Field Solutions" book for the 41. It has a slick 335 step triangle solutions program. Ted gave Dave Hicks permission to use this and more, so it will probably be on the next iteration of the hp museum cd/dvd. Thats a good reason to upgrade!

Re: HP-41cx Message #4 Posted by Ángel Martin on 20 Feb 2004, 2:56 a.m., in response to message #1 by Dave There are triangle "solvers" for the 41 both in HP's MATH Pack and in the AECROM, by RedShift Software, available both in V41's web site. Best, ÁM.

Re: HP-41cx Message #5 Posted by Christoph Klug on 20 Feb 2004, 7:47 a.m., in response to message #4 by Ángel Martin Dear Dave and Angle, the triangle solver of the HP Math Pack and the AECROM also available for EMU41 :-) Regards - Christoph Klug

Re: HP-41cx - 42s - Triangle Solutions Message #6 Posted by Wayne Stephens on 20 Feb 2004, 8:05 a.m., in response to message #1 by Dave There is a nice triangle solution program for the 42S also. I have it loaded into mine, along with a rather nice vertical curve program, and it works extremely well. I have been led to believe that the 42S is exactly compatible with the 41 from a programming standpoint. If this is in fact the case, then the 42s program should need little or no "translation" to work on your 41cx. The programs were in a book that I purchased some years ago so there may be copyright issues. However, I will look through my stuff when I get home tonight and find the title of the book ("Surveying solutions for the 42s" or some such). Perhaps it is still available. Or maybe the guy(s) who wrote it look at this forum and will offer up their permission for me to fax the code to you or something. Is there anyone out there who recognizes this book from my cryptic description and who is the author of this program? Take care. Wayne. Edited: 20 Feb 2004, 8:08 a.m.

Re: HP-41cx - 42s - Triangle Solutions Message #7 Posted by Iqbal on 20 Feb 2004, 10:52 a.m., in response to message #6 by Wayne Stephens The name of the book is HP 42S Triangle Solutins by D'Zign . Most programs that work with the 41CX work well on the 42S but I am not sure it works the other way around. I just looked at the program and with some minor adjustments it should work. Up until recently it was available at calcpro. You could probably check out http://www.softwarebydzign.com/ and speak to Ted Kerber. He had some very nice surveying programs for the 41CX.

Re: HP-41cx - 42s - Triangle Solutions Message #8 Posted by db(martinez,california) on 21 Feb 2004, 2:29 a.m., in response to message #6 by Wayne Stephens The 42 program would need a lot of work to function on the 41. In the 42 version Ted used the softkeys for entry of knowns and of course in the program the labeling is simpler. In the 41 version you load the stack and execute local alpha labels. The output looks the same though. They both give give the answer in the format; S1, A1, S2, A2, S3, A3, Area. Each routine is just about perfect for it's respective calculator so why re-invent the wheel? BTW: At 354 steps, the 42s version is 19 steps longer due mainly to line feeds and softkey assignments.

Re: HP-41cx - 42s - Triangle Solutions Message #9 Posted by Wayne Stephens on 27 Feb 2004, 10:05 a.m., in response to message #8 by db(martinez,california) I must have a different program. The triangle solution in my 42S is 219 lines long. It starts with a Menu and lets you use the softkeys to choose SSS, SAA, ASA, SAS or SSA triangle. It then prompts for the three known values which the user must provide. It then provides the solution as follows using the two line display: displays S1/A1, user hits R/S, displays S2/A2, user hits R/S, displays S3/A3, user hits R/S, displays Area/Original Menu. It works very well, displays angles in HMS, and the only glitch I have seen is that sometimes it will display an angle as (##-1).5960 instead of ##.0000 when displaying "exact" angles. Take care. Wayne

42s Triangle Solutions / 49g+ Surveying Solutions Message #10 Posted by db(martinez,california) on 27 Feb 2004, 6:08 p.m., in response to message #9 by Wayne Stephens Wayne: Yours works like the the 41 version. Mine doesn't use prompts and allows area as an entry. I have the "revised second edition". Could you have the 1st edition? If you do then you should immediately ebay it before that vw guy and the one who pays a hundred thirty gollies for a battery both run out of money. Try this title: "!!!OLD VALUABLE UNIQUE FIRST EDITION HP PROGRAM L@@K!!!!" BTW: D'Zign still has about a dozen coppies each of the "HP 42s Surveying Solutions", "HP 42s Topography", and "HP 42s Triangle Solutions (2nd edition)". It's about $25 for the set. Sadly; they don't have any more of the 42s Alignment/Ofset or the Spiral Curves books. Those are some real tight code. The D'Zign site is at http://www.softwarebydzign.com/DZi/index.htm and it also tells about the 3 new surveying programs coming out in the next few weeks for the 49g+.

Re: 42s Triangle Solutions / 49g+ Surveying Solutions Message #11 Posted by Wayne Stephens on 2 Mar 2004, 7:47 a.m., in response to message #10 by db(martinez,california) Perhaps I'll try that. Maybe one of those jackasses who is paying $300+ for the 33S will bid it up to $500???? Take care. Wayne

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