DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The Royal LCB 841 Checkbook
Calculator in its sleeve with holder for a
checkbook and pen.
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This Royal LCB 841 Checkbook Calculator was manufactured in 1981 in Japan. |
The Royal LCB 841 Checkbook
Calculator is powered by two LR54 (LR1130) batteries. |
The printed circuit board
(PCB) of the Royal LCB 841 Checkbook Calculator is centered around a NEC uPD1833G single-chip calculator circuit.
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Close-up
view of the NEC uPD1833G single-chip calculator
circuit.
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If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, February 5, 2020. No reprints without written permission.