DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1766 III
|Date of introduction:||1990||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 4.6" x 2.6" x 0.45"
117 x 65 x 11 mm3
|Weight:||1.7 ounces, 48 grams||Serial No:|
|Batteries:||n.a.||Date of manufacture:||mth 05 year 1992|
|AC-Adapter:||Origin of manufacture:||Malaysia (I)|
|Program steps:||Courtesy of:||Joerg Woerner|
wrote the year 1981 when Texas Instruments entered with the TI-1766
the market of LCD-calculators powered by solar cells. Within two years the cheap
looking TI-1706 appeared and found its own way
through the following decades, while the TI-1766 was always a synonym
for the valuable design. And now - after the various TI-1766
II designs - a really disappointing TI-1766 III based on the TI-1706
Disassembling the featured TI-1766 III manufactured in May 1992 by Inventec Corporation in Malaysia reveals a clean design centered around an unknown single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by four small solar cells.
Inspecting the PCB of this TI-1766 III calculator brought our attention to a small mark reading IOTI1766IIIMB-01F and we started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
The TI-1766 III was manufactured till 1996 before the TI-1766+ with a tiltable display was introduced. The TI-1775 put similar specifications in a foldable housing, while the TI-603D combined the grey housing with a novel "Day of the Week" feature.
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© Joerg Woerner, February 3, 2002. No reprints without written permission.