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Additional Pictures 

 

This Unisonic LC 266CK calculator was manufactured in 1987 in Taiwan.

The printed circuit board (PCB) of the Unisonic LC 266CK manufactured in 1987 doesn't reveal type and manufacturer of its
single-chip calculator circuit but we are almost positive to spot a Toshiba T7752S.

Close-up view of the Toshiba T7752S single-chip calculator circuit.

Close-up view of the PCB-Mark of the LC 266CK.


horizontal rule

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

Joerg Woerner, February 27, 2020. No reprints without written permission.