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)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

TI-1766-III_BACK.jpg (55789 Byte)We 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 III.

TI-1766-III_PCB.jpg (86746 Byte)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.

The TI-1766 III is featured in the Texas Instruments Incorporated sales catalog CL-1233 dated 1994.


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Joerg Woerner, February 3, 2002. No reprints without written permission.