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Welcome to my website, dedicated to the HP 39/40G Graphics calculator. This site contains mainly programs written by myself for the 39G, but I will gladly post anyone's programs, aplets etc. There are a number of other great HP calculator sites, so be sure to check my links page. I hope this page is useful to everyone! Alan Lark News: 28/4/2008 Ok, I know I
don’t update this page very regularly :) But I have been receiving a few emails
requesting my year 12 Chemistry and Physics notes… so here they
are!!! I’ve placed them both in
the Sci Aplets page. I’m
thinking of adding a few new bits and pieces to this page including tutorials
on how to “trick” the calculator into doing more advanced
operations such as indefinite integrals and implicit differentiation. Also, to any budding programmers out there,
there’s been a massive dry patch of new programs over the last couple
of years; particularly since the new 39gs and 39g+ came out. So if anyone wants to try their hand at
programming, I’d be happy to advise you how, or even post your
creations on the site. As a final note,
I’m finding that a number of schools are switching to Casio calculators
over HP. Personally, I feel this is a
mistake. The main areas where in my
opinion the HP dominates are: ·
The programming language. I
feel HPbasic is far more intuitive, and allows a far superior graphical
output including direct access to each pixel rather then the simple text
based output of the Casio. The HP also
contains a vast number of operations including matrix row and column
operations and storing screenshots to memory. ·
Symbolic calculus. As far as
I am aware, the HP calculators are the only range of student calculators
which allow symbolic solutions of calculus problems rather then just a
numerical result. ·
Notes. Although it is not
truly ASCII standard, notes can be edited easily in notepad, and there is
support for upper and lowercase letters, as well as a far superior list of
scientific symbols. ·
The general interface. Ok,
this point is a bit more subjective, but although many people find that there
is a learning curve to the HP interface; I feel that once you become
proficient with it, it is far quicker to use then having to go through the
menu system of the Casio. For the record, I am
not affiliated with HP. I have used
and programmed on the Casio calculators and I do believe they are useful
devices. There are certainly a number
of useful educational routines on the Casio calculators, such as the ability
to manually determine echelon form matrices.
But in my opinion, the potential of the HP is far greater in terms of
user-written programs. Highlights:
2008 Alan Lark |
