Bugs?
in [HP48]
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From: John on 4 Mar 2010 18:24 On Mar 4, 11:40 am, Han <handuongs...(a)gmail.com> wrote: > I think I will go ahead and buy one. Thanks for the advice, everyone. If it's really important, check the calculation on another platform with different software pedigree. HP against TI, HP against PC, HP against PPC Apple, etc.
From: CT_Surveyor on 5 Mar 2010 23:31 On Mar 3, 11:33 pm, greenchile505 <greenchile...(a)yahoo.com> wrote: > upload the latest ROM. Sadly, you can't do that with an HP 35s, which > has permanent, roach motel, one-way-in-no-way-out bugs. I have an HP-35, and I think the reason it (and the HP-33s) have NO input/output other than the keyboard and screen is to comply with requirements imposed by the NCEES for which calculators it will allow in the national Engineer's and Land Surveyor's exams. Of the five calculators they do allow, the HP-35 is by far the most capable, thanks to it's programmability.
From: CT_Surveyor on 5 Mar 2010 23:40 On Mar 4, 3:24 pm, John <zzj...(a)gmail.com> wrote: > On Mar 4, 11:40 am, Han <handuongs...(a)gmail.com> wrote: > > > I think I will go ahead and buy one. Thanks for the advice, everyone. > > If it's really important, check the calculation on another platform > with different software pedigree. > For number crunching applications requiring extreme accuracy, the HP-50g has the capability to use "extended real numbers", which have 15 significant digits instead of 12. However, extended reals aren't directly supported in UserRPL, which is the calculator's top level user interface. The math operators that can manipulate Extended Reals are part of the SystemRPL command set, which you can access by either writing and compiling programs, or with SYSEVAL commands (clumsy and laborious). You should download and start reading Edward Kalinowski's "Programming in SystemRPL", the HP-49/50 bible on how to get the most "bang" out of your calculator.
From: Han on 6 Mar 2010 00:09
> For number crunching applications requiring extreme accuracy, the > HP-50g has the capability to use "extended real numbers", which have > 15 significant digits instead of 12. However, extended reals aren't > directly supported in UserRPL, which is the calculator's top level > user interface. The math operators that can manipulate Extended Reals > are part of the SystemRPL command set, which you can access by either > writing and compiling programs, or with SYSEVAL commands (clumsy and > laborious). You should download and start reading Edward Kalinowski's > "Programming in SystemRPL", the HP-49/50 bible > on how to get the most "bang" out of your calculator. I am familiar with the extended reals -- in fact, these were available on the HP48 as well. My original concern had to do with accuracy within the implementation of the algorithms used by various commands, and not about the amount of precision of the returned values. |