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Texas Instruments -1796 Prototype

Date of introduction:  never Display technology:  LCD
New price:   Display size:  10
Size:  5.7" x 4.3" x 1.0"
 145 x 109 x 25 mm3
   
Weight:  3.9 ounces, 111 grams Serial No:  A201783
Batteries:  LR54 Date of manufacture:  1999
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  10 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The -1796 calculator was introduced 2000 in a dark, translucent housing. Nevertheless displayed the Texas Instruments website in the 2000-2003 timeframe a white housing like the TI-1796SV. This Prototype of the €-1796 gives us a good understanding how the original design looked.

Dismantling this €-1796 manufactured probably around 1999 by Nam Tai Electronics in China reveals a clean design centered around an unknown single-chip calculator circuit mounted in Chip-on-Board (COB) technology on a small double-sided printed circuit board (PCB) and powered by small solar cells. A larger, single-sided PCB is used for the keyboard and connected with a short flat flexible cable (FFC). Nam Tai introduced this technology for Texas Instruments' Desktop Calculator Line in 1996 with the TI-1795+.

In 2006 Texas Instruments surprised customers in Europe with a complete new family of Euro Calculators labeled EC-3, EC-5 and EC-7 Pro.

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

Joerg Woerner, November 17, 2003. No reprints without written permission.