|Re: 15c LE production|
Message #21 Posted by Mike Morrow on 4 Oct 2011, 10:48 a.m.,
in response to message #20 by Jeff O.
For the record, to make the 42s near-perfect in my opinion, it needs more memory (no problem today) some form of I/O, ...
At this point, it becomes almost mandatory that the calculator becomes large enough to carry at least two AAA cells. Button and coin sized cells can not support much I/O, especially if one of the most desirable methods (micro SD) were employed. I would like to see a design that used coin or button cells for compactness, had micro SD and USB, but only allowed writes to the micro SD when external power through the USB connector was present.
...and complex number support as described here, for example.
Your reference doesn't really describe complex number support, just complex number entry method, which IMHO just scratches the surface of complex support. Complex number support in depth and detail means any function that the machine performs which is defined for the complex domain as input or output is performed naturally by the machine. In that respect, the 42S overwhelms the capability of any other handheld made by anyone ever, except the RPL machines. There are a few omissions, such as lack of a complex gamma function. I'm quite happy with the current 42S complex number entry method, and I am unconvinced of any real advantage for other approaches.
I'd also like to see a larger screen, to give better graphing support but mostly to display the stack, Last x, and the date and time (ala the one Eric showed for DIY5). But now I am heading into feature-creep territory.
I would like to see an HP 42S replacement that, in addition to the micro SD and USB external power source mentioned above, is the same size (accepting the limitation that places on power source), faster, and has real time clock, calendar, and financial programming of the 17bii. And...one that isn't "orange on brown/dark brown" ugly.