DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
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) |
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.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 20, 2009. No reprints without written permission.