DATAMATH CALCULATOR MUSEUM
|This Exactra 23 uses a LED display
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.
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© Joerg Woerner, October 17, 2003. No reprints without written permission.