DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1706+ (Prototype)
|Date of introduction:||(1996)||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 4.9" x 2.7" x
125 x 68 x 9 mm3
|Weight:||1.7 ounces, 48 grams||Serial No:||QA1 - 93293026|
|Batteries:||n.a.||Date of manufacture:||mth 02 year 1996|
|AC-Adapter:||Origin of manufacture:||China (N)|
|Program steps:||Courtesy of:||Joerg Woerner|
TI-1706+ got again a rounder shape and different keys compared to the earlier TI-1706+
introduced three years earlier. This design theme was
introduced with the TI-503+.
Dismantling this TI-1706+ Prototype manufactured in February 1996 by Nam Tai Electronics, Inc. in China reveals a clean design centered around an unknown single-chip calculator circuit bonded in Chip-on-Board (COB) technology directly onto a double-sided printed circuit board (PCB) and powered by four small solar cells.
Inspecting the PCB of this TI-1706+ Prototype brought our attention to three small marks reading TI-1706NP, JV302 and YK3552-1 confirming its split from the TI-106. With an early series production model of the TI-1706+ reading YK3552-2 do we assume that this calculator is in Revision 1 of its design (Schematics and PCB). We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
A similar housing with a tiltable display was used with the TI-1766+.
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© Joerg Woerner, May 15, 2020. No reprints without written permission.