Hi, all
- I've just updated my HP calc web site to include two additional Datafile articles written by me, freely downloadable in PDF format, namely:
- "HP-71B Sudoku Generator & Coach"
This completes my Sudoku Trilogy with a 14-page article featuring a Sudoku Generator & Coach which can
generate an essentially infinite number of puzzles per the user's specifications,
including number of empty places, symmetries and, optionally, guaranteed
uniqueness and solvability without guessing ever being necessary, in a fully
ergonomic, printable format. The coach part can give appropriate hints of various
types, one by one, guaranteed to be deductible by the user in the given order, either
fully completing the puzzle or stopping midway, both for the self-generated
puzzless and externally provided ones. - "Long Live the HP-25 !"
7-page article to commemorate the HP-25, my first HP calculator ever and one of
the most memorable classics ever made. The article includes some fond personal
remembrances of those golden times, as well as a thorough explanation of why the
HP-25 made such an impact back then, all of it conveniently laced with two
awesome programs written in the 70's by two enthusiastic youths, namely my friend
Fernando del Rey and myself. Single-stepping through the code is a revealing
experience, where you can see what can be done in less than 40 steps and how
everything fits together and works as if by magic.
and last but not least ...
- "Boldly Going - Identifying Constants"
-
This is my latest published Datafile article, which isn't available
online but featured in the current Datafile issue, V26N2 pp24-37. It's a 14-page article which includes a truly awesome (if simple) program which allows ye goode olde HP-71B to perform some rather impressive 'symbolic' feats. The program does not require any additional ROMs or files, just a bare bones HP-71B, and can be converted to any other suitably fast HP model or emulator with minimum effort.Have a look at the very first page of the article which tells it all (the full 14-page article boasts more than 40 worked out examples, including the five shown in this first page, as well as three detailed extensions, the last being an 'exercise' for the reader, solution included ! :-)
That's all. Hope you enjoy the two new uploaded articles and
Edited: 20 Apr 2007, 7:33 a.m.