|Re: 15C emulator interest?|
Message #2 Posted by Vieira, Luiz C. (Brazil) on 5 Dec 2002, 9:28 p.m.,
in response to message #1 by Math Geek
you probably know about it, but there are simulators for these: HP12C (some), HP16C (wrote by Mr. Cameron Paine, one of our contributors), HP11C (I saw a shareware once, I am almost sure I still have it) and I have a vage, vage memory of seeing or reading about an HP15C emulator.
The point is: I think it is very interesting, mostly if memory limits are expanded, say, a 99 X 99 matrix limit instead of 64 elements total.
The HP15C Advanced Functions Hnadbook has a lot of good information about accuracy and how numeric integration and SOLVE work. I tried some of the examples in the HP42S and, as expected, the 15 digit internal representation enhances accuracy, but still leave an unpleasant amount of error, smaller than the ones in the HP15C, but they exist.
I'm posting this because I believe an HP15C simulator running on a PC may have the precision enhanced (# of mantissa digits ) OR keep the original accuracy, so procedures on both simulator and calculator would result exactly the same.
Are you interested on going any further? I do not even know how to scracth a simulator, I'll be of no help for it, but I have been programming in C, C++, TCL/TK, Kylix (repeating examples so far) and I'm starting with Java (I'm begining to read a book about it). I'd like to go along with this.
Hope you keep posting whatever you are doing about this subject.