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Additional Pictures 

 

The sales box of the Unisonic LC 263CK calculator sold around 1982 in the US.

The Unisonic LC 263CK in its sleeve with holder for a checkbook, credit cards, and pen.

This Unisonic LC 263CK was manufactured in 1982 in Japan.

The Unisonic LC 263CK calculator is powered by two LR44 batteries.

The printed circuit board (PCB) of the Unisonic LC 263CK calculator is centered
around a NEC uPD1833G single-chip calculator circuit.

Close-up view of the NEC uPD1833G single-chip calculator circuit.


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© Joerg Woerner, Febriary 6, 2020. No reprints without written permission.