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Texas Instruments TI-1766 (2nd design)

Date of introduction:  1982 Display technology:  LCD
New price:  
 $18 (October 1981)
Display size:  8
Size:  4.6" x 2.6" x 0.35"    
Weight:  1.9 ounces Serial No:  880625
Batteries:  n.a.  Date of manufacture:  mth 11 year 1982
AC-Adapter:   Origin of manufacture:  Japan
Precision:  8 Integrated circuits:  Toshiba T6758S
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

With the TI-1766 Texas Instruments entered 1981 the market of LCD-calculators powered by solar cells. This 2nd design replaced the redundant "SOLAR AND LIGHT POWER" phrase with a more precise "LIGHT POWERED" slogan.


TI-1766_4_PCB.jpg (103546 Byte)The printed circuit board (PCB) inside this TI-1766 manufactured end of 1982 carries the designation "Toshiba TI-1766 SOLAR". How to distinguish between the 1st design and this 2nd design? 

  1st design 2nd design 
Solar cells 10 elements 10 elements
Name SOLAR AND LIGHT POWER LIGHT POWERED
PCB revision TI-1766 TI-1766 SOLAR
Calculator chip Toshiba T6758S Toshiba T6758S

In 1983 Toshiba reduced the supply voltage of the electronics and switched to solar cells with just 4 elements. Don't miss the 3rd design of the TI-1766.

horizontal rule

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

Joerg Woerner, March 17, 2007. No reprints without written permission.