Submitted-by: Christian Heuss <heuss@urz.unibas.ch>
Posting-number: Volume 2, Issue 40
Archive-name: pte/part01


BEGIN_DOC pte.doc

I publish this periodic table library for a friend of mine. For any
reactions write to <heuss@urz.unibas.ch>.

****************************************************************************

PTE is a library that creates the periodic table of the elements graphically
on your HP-48SX. With PTE you have the possibility to look for an elements
name, symbol, atomic number, atomic weight and electron configuration. Also
you can sum up atomic weights to get the molecular weight of a chemical
compound.

Installing PTE:
- Download PTE.LIB to your calculator.
- Recall the library to the stack and store it in port 0 by typing :0:888
  <enter> STO <enter>.
- Turn the calculator off and on and PTE attaches itself to the
  home-directory. Once installed PTE needs 9401.5 bytes.
- If you want to remove PTE type :0:888 <enter> DETACH <enter>
  :0:888 <enter> PURGE <enter>.

Working with PTE:
<TABLE> - The periodic table appears on the display. Using the <cursor>-keys
          you can move around. <Backspace> leaves the program.
          Hitting <enter> shows you a window with symbol, name, atomic weight
          and number of the specified element until you press any other key.
<ELCO>  - You see the same table as above. Hitting <enter> shows you the
          electron configuration of the specified element. If two orbits are
          shown inverted, it means an exception to the orbit-filling-rule
          (for example that one s-electron jumps to a d-orbit because that
           is more symmetric and therefore has a lower energy).
<MOLW>  - You see the same table as above (what surprise !). Hitting <enter>
          shows you a window with the question how many atoms of the current
          element you wish to add to your molecular weight. Entering a number
          (nothing means 0) and pressing <enter> takes you back to the table.
          Leaving the table with <backspace> takes the molecular weight to
          the stack.

I hope PTE helps you and excuse my horrible english.

                                                          Torsten Wittmann
END_DOC