Additional Pictures 


The Canon F-58 uses a Toshiba single-chip calculator circuit on a small
printed circuit board (PCB). 

The internal construction uses a heavy sheet metal to support the connection
of the PCB to both the LC-display and keyboard foil sandwich
The picture below doesn't show the isolating spacer  laying between the
two conductive foils.

If you have additions to the above article please email:

Joerg Woerner, September 27, 2002. No reprints without written permission.