Additional Pictures 


The sales box of the Royal CBC 80NT Checkbook Calculator sold around 1987 in the US.

This Royal CBC 80NT Checkbook Calculator was manufactured in 1987 in Taiwan.

The printed circuit board (PCB) of the Royal CBC 80NT 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 a CBC 80NT.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, February 13, 2020. No reprints without written permission.