DATAMATH  CALCULATOR  MUSEUM

Additional Pictures 

 

This Exactra 23 uses a LED display manufactured by
Bowmar, better known as Opto-Stick. 

The printed circuit board (PCB) of the Exactra 23
with the TMS0803 single-chip calculator circuit and
one additional display driver plus transistors. 


If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, October 17, 2003. No reprints without written permission.