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Texas Instruments TI-1766 II (2nd design)

Date of introduction:  1987 Display technology:  LCD
New price:   Display size:  8
Size:  4.6" x 2.5" x 0.35"
 117 x 65 x 8 mm3
   
Weight:  1.8 ounces, 52 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 09 year 1987
AC-Adapter:   Origin of manufacture:  Taiwan (I)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The second design of the TI-1766 II sports for unknown reasons larger solar cells than the first edition introduced just one year earlier. Texas Instruments entered already in 1981 with the TI-1766 the market of LCD-calculators powered by solar cells. It took only two years and the cheaper looking TI-1706 appeared and made its own way in TI's calculator product line. 

The next generation of both the TI-1766 II and TI-1706 II kept still a visible difference in their appearance. Don't miss the TI-1768 of the same era sporting a tiltable display.

Dismantling this TI-1766 II manufactured in September 1987 by Inventec Corporation in Taiwan reveals a clean design centered around an unidentified single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by four large solar cells.

In 1988 the design was slightly changed and looks almost identical to the first design of the TI-1766 II, don't miss the final TI-1766 II. The third generation of the TI-1766 and TI-1706 - named TI-1766 III and TI-1706 III - lost the exclusive flair of the TI-1766 and used similar housings.

The TI-1766+ introduced in 1996 brought finally the value proposition of the TI-1766 series back again.



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If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, February 23, 2006. No reprints without written permission.