DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This BA-20 Profit Manager Calculator
was
manufactured in July 1990 by Compal Electronics in Taiwan (Date code C-0790 » mth 07 yr 1990).
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The printed circuit board
(PCB) of the BA-20 is centered around a n Inventa LI3163 single-chip calculator circuit. Please notice the empty space for the backup battery and the contacts for the omitted switch.
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Close-up view of the
clock module. |
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The printed circuit board (PCB) of
the clock module. |
Close-up view of the single-chip clock circuit. |
Close-up view of the Inventa LI3163 single-chip calculator
circuit. |
Close-up
view of the PCB-Mark of a BA-20. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, April 5, 2020. No reprints without written permission.