HP15C LE vs. HP15C

[rkf]

Now the moment has come, when I put my HP15C LE finally into my collections display cabinet, since he only shows up Pr Error, no way. If I understood previous discussions to this "feature" correctly, it's due to an error by design, maybe correctable with a new firmware.

I bought this unit last October from thecalculatorstore, so its age is only about nine months

Now I'm using again my good old HP15C of 1987 U.S.A. (maybe on its first batteries?) 100 times slower, but nevertheless working like a charm