DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-108
| Date of introduction: | 2004 | Display technology: | LCD |
| New price: | ($5.99 in 2004) | Display size: | 8 |
| Size: | 4.3" x 2.5" x
0.40" 110 x 64 x 10 mm3 |
||
| Weight: | 1.5 ounces, 44 grams | Serial No: | |
| Batteries: | CR1220 | Date of manufacture: | mth 04 year 2008 (E) |
| AC-Adapter: | Origin of manufacture: | China (S) | |
| Precision: | 8 | Integrated circuits: | Sharp LI3154 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
fifth generation TI-108 looks looks at first
glance very familiar to us and you have to read the small printed on the backside of
the blue housing: 3V X 1 CR1220. Yes, finally a backup
battery for the solar powered TI-108 introduced already in 1988!
Dismantling
this TI-108 manufactured in August 2004 by Inventec Corporation in
Shanghai (China) reveals a pretty simple internal construction.
Please notice
the Sharp LI3154 single-chip calculator circuit in a traditional package - a
technology rarely seen in the 21st century and discontinued with the
redesign of the TI-108 in 2010.
Texas Instruments changed the design of the TI-108 again in 2014 and the internal backup was switched from a 3V Lithium battery to a more common (and more economical) Alkaline button cell with 1.5V.
Please find a detailed overview of the different hardware versions of the TI-108 calculators between 1988 and 2016 here.
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.