|Re: Basic Operations|
Message #2 Posted by Vieira, Luiz C. (Brazil) on 24 Aug 2004, 1:47 p.m.,
in response to message #1 by John Limpert
I remember having some considerations like yours, and I guess that we can get a "trip back in time" and see how did Engineering needs change. Many things heppened since the first slide rule became available, and I mention the slide rule because some TI calculators in fact had a SR (Slide Rule) product code, meaning they intended to be electronic slide rules. Believe me, I was talking about these very subjects a few days ago with my coleages at the university.
About the rectangular to polar conversion. I consider that the conversion itself is only needed for a few purposes, like seeing one or other representation. Either rectangular or polar are a pair of numbers refering to an entity: a coordinate, a complex number, etc. What the HP4x series designers assumed (engineers, I guess) is that converting from one representation to another one as mostly a matter of viewing mode, and retrieving any component without the need of converting or being in one specific mode (ABS, ARG, RE, IM) would lead to new approaches. Everytime I use an HP4x to deal with complex numbers I remember(sometimes after a few trial and error) taht this is the way they (HP4x) do.
Just my opinion, of course.
Edited: 24 Aug 2004, 1:49 p.m.