DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1889
| Date of introduction: | 1982 | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 4.4" x 2.5" x 0.3" 112 x 65 x 7 mm3 |
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| Weight: | 1.7 ounces, 48 grams | Serial No: | 103086 |
| Batteries: | 2*LR1130 | Date of manufacture: | mth 09 year 1982 |
| AC-Adapter: | Origin of manufacture: | Japan | |
| Precision: | 8 | Integrated circuits: | Toshiba T6751 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual: | 
(US: 1.0 MByte) |
Compared
with the basic calculators manufactured in Taiwan early in the Eighties, the "TI-1889 Metric
Converter"
feels more substantial.
Dismantling
this TI-1889 manufactured in September 1982 by
Toshiba in Japan reveals a
single-chip calculator circuit T6751 introduced in 1981.
A
similar calculator with additional solar cells, known as TI-1895,
is in daily use with the Datamath Calculator Museum to convert weight and size
of the featured products. Compare it with the slimline Converter
introduced 1981.
The TI-1889 compares with the Canon FC-43 introduced around 1983.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.