Harold Hallikainen wrote:
>
> While I use Google calculator when I need to do base conversions, I use my
> HP 15-C for everything else. I still have my very first calculator, the
> HP-35, that I got in 1972. I grew up with RPN (or, before that, the slide
> rule). When trying to use calculators with algebraic entry, I always have
> unbalanced parenthesis somewhere. With RPN, I solve the problem like I did
> with my slide rule (starting at the innermost parenthesis and working my
> way out, seeing all the intermediate calculations as I go along).

I still use my HP 15C as well.  Bought it as an EE student back in '83 or
'84.  RPN still feels natural and comfortable to me (even if my kids think
my calculator is weird) and, although the 15C is old and slow and only
shows one line, I really like the "landscape" layout and, more
importantly, the solid feel.  Built to last and comfortable to use.


David Meiklejohn
www.gooligum.com.au

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