HP 42s programming help for novice Message #1 Posted by Carl D (new) on 1 Feb 2013, 9:21 p.m.
I have recently purchased an HP 42s and would like to put a "QPI" fraction program on it, specifically, the one kindly put on the web by Mr Erik Ehrling. The other calculator I own is a 48G, but I have never tried programming anything on a calculator before, RPN/RPL or otherwise, so this is a new discovery for me.
I am having difficulty entering in some of these commands and symbols, which I cannot find on the calculator, in the menus.
The ones I am having trouble with are:
Line 49  the T symbol rotated back 90 degrees (and anywhere in future commands where this symbol is repeated).
Line 95  XEQ IND ST X (I can only enter XEQ followed by 2 numbers)
Line 103  RCL ST Y (again, I can only enter RCL followed by 2 numbers, and any future instances where ST follows RCL)
Line 106  XEQ IND 03 (can't find where the IND comes from, any future instances where IND follows XEQ)
Line 378  STO ST L (again, unsure where the ST comes from).
Also, if we make a mistake on one of the lines after having entered all nearly 400 lines, how do we correct but not delete a line? The lack of an "edit" or "undo" buttons is something I miss from the 48.
I'm very much looking forward to your responses, thanks in advance.
