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In the 1970s people used to wear t-shirts that said:

	ENTER > EQUALS

RPN, the language of the HP calculators, is an acquired taste, but once
mastered, one will often choose it over an algebraic.  TI makes algebraic calculators,
which are fine, (I have several), but I prefer the HP (I have more).

HP used to publish some excellent Navigation Pacs of software for their
calculators.  They got out of that business (sadly) and the Starpath set of programs
for TI have recently put HP to shame.  What I have done is write my own HP-48 
software to figure out the position of the Sun and make quick work of sextant 
math, but my software is currently only usable by me.  I should polish it off 
and post it, but who has the time?

The new HP-49G symbolic machine is impressive, but is not great for numeric work.
I highly recommend the HP-48G+ as an excellent navigation machine.  I have several.

Dan

-----Original Message-----
From  Navigation Mailing List
[mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]On Behalf Of Glendon
Sent: Friday, December 08, 2000 9:33 PM
To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM
Subject: Calculators revisited (TI-86, HP 48gx)


Hi,
I'm interested in a calculator for navigation.
I've read through some of the recent archived discussion on
calculators... and the discussion seems to come down to the TI pr the
HP. The TI-86 seems favoured, perhaps because of input into this group
from Starpath, and also/perhaps because Starpath's  program can
apparently be loaded straight onto it. The TI is also slightly cheaper
than the HP on eBay. Some questions.

I wonder if people have views on the relative merits of the TI vs the HP
as calculators in their own right.

The HP seems to have a  much wider repository of freely available
programs (see for example  hpcalc.org and in particular
http://hpcalc.org/hp48/science/astronomy/  ) including an
almanac....which I reckon I might be able to use to  build up into my
own navigational package. There doesn't seem to be any equivalent for
the TI. Anybody got any experience in trying to carry the logic of HP
programs into TI?

Any thought appreciated

Lee

   

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