DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1795SV
|Date of introduction:||2000||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 5.2" x 4.3" x
132 x 109 x 24 mm3
|Weight:||3.3 ounces, 93 grams||Serial No:|
|Batteries:||LR54 (30µA)||Date of manufacture:||mth 03 year 2000 (A)|
|AC-Adapter:||Origin of manufacture:||China (N)|
|Program steps:||Courtesy of:||Joerg Woerner|
TI-1795SV looks great - you won't find any right angle in the design. Curious
about the SV designation? It is the abbreviation of SuperViewTM which
implies the perfect size and contrast of the LC-Display. Compare it with its predecessor
or the TI-508 PLUS.
Dismantling this TI-1795SV manufactured in March 2000 by Nam Tai Electronics in China and a second unit from June 2002 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 and a LR54 (LR1130) backup battery. A larger, single-sided PCB is used for the keyboard and connected with a short flat flexible cable (FFC).
Inspecting the PCBs of the two TI-1795SV calculators brought our attention to two small marks reading TI-1795SV VS302-1 resp. TI-1795SV VS307-1. We spotted a very similar pair of PCB-Marks already with a TI-1795+ manufactured by Nam Tai Electronics and reading TI-1795NP JP302-2 resp. TI-1795NP JP307-2. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
An identical calculator was sold with the TI-7350SV while the almost identical TI-1796SV features a display with 10 digits capability.
A similar shaped housing was used with the €-1796 introduced in 2000, too.
In 2003 Texas Instruments introduced
with the TI-503SV, TI-1706SV and
TI-1795SV a new design style. These calculators
were optimized in the wind tunnel for best aerodynamics. The TI-1795SV was in 2003 the only calculator that
actually received even a
technical improvement with its new tax functionality.
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© Joerg Woerner, February 3, 2002. No reprints without written permission.