Texas Instruments TI-1706 (3rd design)

Date of introduction:  1984 Display technology:  LCD
New price:   Display size:  8
Size:  4.8" x 2.6" x 0.4"    
Weight:  2.0 ounces 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

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.

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