DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-108
| Date of introduction: | 2016 | Display technology: | LCD |
| New price: | $7.95 (SRP 2017) | Display size: | 8 |
| Size: | 4.3" x 2.5" x
0.40" 110 x 64 x 10 mm3 |
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| Weight: | 1.5 ounces, 44 grams | Serial No: | |
| Batteries: | LR1130 | Date of manufacture: | mth 02 year 2016 |
| AC-Adapter: | Origin of manufacture: | Philippines (L) | |
| Precision: | 8 | Integrated circuits: | |
| Memories: | 1 | ||
| 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 July 2014. Please find a detailed overview of the different hardware versions of the TI-108 calculators between 1988 and 2016 here.
Dismantling
this TI-108 manufactured in February 2016 by
Kinpo Electronics in
the Philippines reveals a pretty simple internal construction from the Nineties
that is identical with the earlier design manufactured in China.
The
unknown single-chip calculator circuit of this TI-108 is hidden under a small epoxy blob.
Stokes Publishing Company, Inc. based in Sunnyvale, California
sold a companion for the teacher, view the Basic.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 27, 2017. No reprints without written permission.