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Texas Instruments TI-7350SV

Date of introduction:  1999 Display technology:  LCD
New price:   Display size:  8
Size:  5.2" x 4.3" x 0.95"
 131 x 109 x 24 mm3
   
Weight:  3.3 ounces, 93 grams Serial No:  
Batteries:  LR54 (30A) Date of manufacture:  mth 03 year 2002 (B)
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

This TI-7350SV - successor of the TI-7350 - looks at first glance 100% identical with the TI-1795SV introduced in 2000. The only interesting part we found so far, is the backside of the package. The specifications are given in 4 languages: English, French, Spanish, and Portuguese. Rather atypical for Texas Instruments.

Dismantling this TI-7350SV manufactured in March 2002 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 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 TI-7350SV calculators brought our attention to two small marks reading TI-1795SV VS302-1 resp. TI-1795SV VS307-1 prooviing its true identity. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.



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

Joerg Woerner, May 26, 2004. No reprints without written permission.