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Texas Instruments TI-1796+ (1998 Kinpo)

Date of introduction:  1998 Display technology:  LCD
New price:   Display size:  10
Size:  5.1" x 4.2" x 1.0"
 130 x 106 x 26 mm3
   
Weight:  3.3 ounces, 94 grams Serial No:  
Batteries:  LR54 (30A) Date of manufacture:  mth 06 year 1998
AC-Adapter:   Origin of manufacture:  China (G)
Precision:  10 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

Production of the TI-1796+ and its sibling TI-1795+ with 8 digits display capacity was shifted in June 1996 from Thailand to China.

Dismantling this TI-1796+ manufactured in June 1998 by Kinpo Electronics in China reveals a clean design centered around an unknown single-chip calculator circuit in a conventional Quad Flat Pack (QFP) housing and soldered on a double-sided printed circuit board (PCB). The electronics is powered by 4 small solar cells and a LR54 (LR1130) backup battery.

Inspecting the PCB of the TI-1796+ calculator brought our attention to a small mark reading SD29A-11, most likely a reference to Type Small Desktop 2nd Design 9 Advanced and Revision 1.1 of the design (schematics and layout). We spotted a very similar PCB-Mark reading SD29-11 already with the TI-1795+ and started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.

The TI-1796+ was replaced in 1999 with the much more stylish TI-1796SV (SuperViewTM). Don't miss the first generation TI-1796 introduced already in 1986.

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

Joerg Woerner, April 9, 2020. No reprints without written permission.