Re: Now where the heck did this calc come from?...a hint, perhaps? Message #2 Posted by Eric Smith on 4 Feb 2008, 9:00 p.m., in response to message #1 by Dallas Osborne
I don't know about that, but their online RPN calculator demo doesn't retain T when the stack drops. T becomes zero. :-(
The ENTER key behaves more like an RPL enter than an RPN enter.
They're missing CLx; they have a "Clear" that clears everything.
Their factorial key works on non-integers, but it does NOT implement the Gamma(x-1) function.
And of course they're not using BCD arithmetic. They use whatever arithmetic Javascript provides, which is usually the host's IEEE floating point. While they detect trying to use the square root key with a negative argument, doing 4 CHS .5 y%x yields "NaN".
I'm a bit surprised that they didn't want their demo to work more like a simplified version of one of their actual calculators, like a 35s. Still, I guess we should be happy that they're trying to promote RPN at all. For many years they didn't.
Edited: 4 Feb 2008, 9:00 p.m.
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