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
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.

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Joerg Woerner, December 5, 2001. No reprints without written permission.