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Texas Instruments TI-1706 (3rd design - Sharp)

Date of introduction:  1984 Display technology:  LCD
New price:   Display size:  8
Size:  4.7" x 2.6" x 0.40"
 120 x 66 x 10 mm3
   
Weight:  2.0 ounces, 56 grams Serial No:  1223981
Batteries:  n.a. Date of manufacture:  mth 03 year 1984
AC-Adapter:   Origin of manufacture:  Taiwan (I)
Precision:  8 Integrated circuits:  Sharp LI3129
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual: (US: 1.8M Bytes)

TI-1706_I0384_Back.jpg (109760 Byte)The third design of the TI-1706 looks at first glance identical to the second design but deciphering the Date codes suggests Inventec Corporation as contract manufacturer of the calculator. Earlier TI-1706 were manufactured by Compal Electronics in Taiwan.

Dismantling this featured TI-1706 calculator manufactured in March 1984 by Inventec Electronics in Taiwan reveals a clean design centered around a Sharp LI3129 single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by five solar cells.

Fellow calculator collector Ken H. Meine discovered recently a TI-1706 (3rd design) featuring a Toshiba T6853BS calculator chip.

Inspecting the PCB of this TI-1706 calculator brought our attention to a small marks reading I1706-01K. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.

Later calculators removed the "LIGHT POWERED" sign, don't miss the 4rd design of the TI-1706.



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

Joerg Woerner, June 20, 2009. No reprints without written permission.