Additional Pictures 


Removing the backside of the housing reveals a strange internal construction
based on a very thin and flexible printed circuit board (PCB). 

Everything inside the Checkbook II is different to the other Checkbook 
calculators. Even the calculator circuit uses a very thin housing.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, February 19, 2004. No reprints without written permission.