DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The sales
box of the APF 3552CK Checkbook Balancer sold around 1982
in the US. |
|
The APF 3552CK Checkbook
Balancer in its
wallet with holder for a checkbook, credit card and a
pen.
|
|
This APF 3552CK Checkbook Balancer was manufactured in September 1982 in Taiwan. | |
The APF 3552CK Checkbook
Balancer is powered by two LR54 (LR1130) batteries. |
|
The printed circuit board
(PCB) of the APF 3552CK Checkbook Balancer is centered around a NEC uPD1832G single-chip calculator circuit.
|
|
Close-up
view of the NEC uPD1832G single-chip calculator
circuit.
|
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.