I purchased my Hewlett Packard 45 pocket calculator
in 1973 for 1.200 DM.
A year before I had bought my first car (a brand new Skoda) for about
5.000 DM. In 1973 I wore my hair as Jimi Hendrix did.
To-day, the Skoda is gone, Jimi Hendrix is dead, and there is not much
left of my hair either, but my HP45 is still fully functional!
The calculator on the left is my internet version of this legendary
Mouse click the keys or the power switch!
If you like it (or if you don't),
or if you find a bug, send your
The math machine is done in this language.
The visual stuff comes from postscript code
which I generated by writing a C program
which describes the appearance of the calculator elements.
show calculator smaller or bigger
PS: As a courtesy to other users, please, turn the calculator off after usage.
(The NiCd batteries of the HP45 only last 3 hours before they need a recharge)