DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The sales
box of the APF 3552CK Checkbook Balancer sold around 1982
in the US. |
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| The APF 3552CK Checkbook
Balancer in its
wallet with holder for a checkbook, credit card and a
pen.
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| This APF 3552CK Checkbook
Balancer
was
manufactured in September 1982 in Taiwan.
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The APF 3552CK Checkbook
Balancer is powered by two LR54 (LR1130) batteries. |
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| The printed circuit board
(PCB) of the APF 3552CK Checkbook Balancer is centered around a NEC uPD1832G single-chip calculator circuit.
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| Close-up
view of the NEC uPD1832G single-chip calculator
circuit.
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Close-up view of the jumper on the PCB. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, February 9, 2020. No reprints without written permission.
