DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| This National Semiconductor NS220 calculator
was
manufactured in November 1981 in Taiwan.
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The National Semiconductor
NS220 calculator is powered by two LR54 (LR1130) batteries. |
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| The printed circuit board
(PCB) of the National Semiconductor NS220 calculator
is centered around a Sharp LI3033MT single-chip calculator circuit.
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| Close-up
view of the Sharp LI3033MT single-chip calculator
circuit.
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Close-up view of the PCB-Mark
of a NS220. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 15, 2020. No reprints without written permission.
