DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-108
|Date of introduction:||2014||Display technology:||LCD|
|New price:||$7.95 (SRP 2017)||Display size:||8|
|Size:|| 4.3" x 2.5" x
110 x 64 x 10 mm3
|Weight:||1.5 ounces, 44 grams||Serial No:|
|Batteries:||LR1130||Date of manufacture:||mth 07 year 2014|
|AC-Adapter:||Origin of manufacture:||China (K)|
|Program steps:||Courtesy of:||Joerg Woerner|
It was quite a surprise when we learned in July 2017 from Michael MacEachern that he just acquired a TI-108 manufactured in March 2017. He noticed some interesting differences compared to the four TI-108 versions we had as of July 2017 exhibited in the Datamath Calculator Museum:
Missing gray bezel for the display frame.
• Larger numbers on the LC Display.
• Internal backup battery.
• TI logo printed in white.
Trying to fill the voids we screened many ebay Auctions in the following months and discovered in addition to this design introduced in or around 2014 a TI-108 manufactured in August 2008 and a TI-108 manufactured in February 2016. Please find a detailed overview of the different hardware versions of the TI-108 calculators between 1988 and 2016 here.
this TI-108 manufactured in July 2014 by
Kinpo Electronics in
China reveals a pretty simple internal construction from the Nineties. The
unknown single-chip calculator circuit of this TI-108 is mounted in Chip-on-Board)
COB) technology on a double-sided printed circuit board (PCB) and hidden under a small epoxy blob.
Inspecting the PCB of this TI-108 calculator brought our attention to a small mark reading 138-10-2, we noticed a similar mark already with the second generation of the TI-1795SV introduced in 2003. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
Production of the TI-108 was shifted in or around 2016 to the Philippines.
Stokes Publishing Company, Inc. based in Sunnyvale, California sold a companion for the teacher, view the Basic.
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© Joerg Woerner, April 17, 2020. No reprints without written permission.