DATAMATH CALCULATOR MUSEUM |
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 |
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Weight: | 3.3 ounces, 94 grams | Serial No: | |
Batteries: | LR54 (30µA) | 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.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, April 9, 2020. No reprints without written permission.