Additional Pictures 


The Basic 1KS keyboard with some removed gold disc 
elements of a TI-2500 Datamath calculator.

The double-shot molded keys of the 
TI-2500 Datamath calculator.

The 1KS116 printed circuit board of the 
Litronix Checkmate 1002 calculator.

A standard 6KS keyboard. 


If you have additions to the above article please email:

Joerg Woerner, October 21, 2002. No reprints without written permission.