DATAMATH CALCULATOR MUSEUM |
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 (30µA) | 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.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 26, 2004. No reprints without written permission.