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Additional Pictures 

 

This UNIS SLR 80 hides its origins.

The printed circuit board (PCB) of the UNIS SLR 80
looks very familiar to us.

Close-up view of the unknown single-chip calculator circuit.

 Close-up view of the PCB-Mark of a SLR 80.


horizontal rule

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

Joerg Woerner, November 26, 2014. No reprints without written permission.