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Bill,
If TI-30Xa is what you showed me,
then Casio has one advantage: it really fits
in an average shirt pocket:-)
The main drawback from my point of view is
only one memory cell that you can use.
(It has 6 for its own use:-)
Having 3 would simplify much solving the nav triangle.
Alex.

On Sun, 13 Feb 2005, Bill wrote:

> Frank
>
> If you are in the mood to blow 8-9 bucks, would strongly suggest checking
> out the TI-30Xa.  Very intuitive and seems (to me) to me more intuitive than
> the Casio.
>
> Bill
>
>
> > Alex wrote:
> > "In addition to my previous message,
> > believe me or not, but my Casio  fx250D worked on its original battery
> > from 1989 to 2004. I actually thought  it is solar-powered"
> >
> > The fx250/260 series are the best non-programmable "trig" calculators ever
> > manufactured (in my opinion!). They do just what we need them to, they do it
> > right, and they are now dirt cheap. I've got three of them within twenty feet
> > of  me right now because they're such a great value.
> >
> > You mentioned the sexagesimal (deg, min, sec) input function earlier. I was
> > amazed to discover when I bought an fx-260 solar-powered model last fall that
> > this function has been refined even more. Whereas earlier versions displayed
> > the  angle always as decimal degrees, this newer model shows deg, min, sec
> > separately  which makes typos much more obvious. It also does inverse
> > conversions
> > when you  want to get deg,min,sec from decimal degrees. These are trivial
> > matters in any  expensive computing device, but it's just amazing to see it in
> > a
> > calculator  that costs less than eight dollars.
> >
> > -FER
> > 42.0N  87.7W, or 41.4N  72.1W.
> > www.HistoricalAtlas.com/lunars
> >
>

   

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