DATAMATH CALCULATOR MUSEUM
This TI-1020 was
manufactured in December 1980
in Taiwan (Date code 4980 » week 49 yr 1980).
TI-1020 hides its true manufacturer.
|The printed circuit board
(PCB) of the TI-1020 is centered
around a Sharp LI3009 single-chip calculator circuit.
|The Sharp LI3009
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© Joerg Woerner, March 4, 2010. No reprints without written permission.