DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-7 MathMate
| Date of introduction: | 1993 | Display technology: | LCD |
| New price: | ($7.99 in 2004) | Display size: | 8 |
| Size: | 4.6" x 2.5" x
0.35" 116 x 64 x 9 mm3 |
||
| Weight: | 1.8 ounces, 50 grams | Serial No: | |
| Batteries: | CR1220 | Date of manufacture: | mth 10 year 2004 (F) |
| AC-Adapter: | Origin of manufacture: | China (N) | |
| Precision: | 8 | Integrated circuits: | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The original
TI-7 MathMate was introduced already in 1991 and
looks even in 2009 familiar. This second generation of the TI-7 MathMate looks identical to
the original design but added a small battery to
the solar cells.
(Picture on the left shows the 1991 model)
Dismantling
a TI-7 MathMate assembled in October 2004 by Nam
Tai Electronics, Inc. in China demonstrates a clean internal construction
but the calculator circuit doesn't reveal its genes. Please notice the already mentioned CR1220 lithium battery next to the solar cells.
Stokes Publishing Company, Inc. based in Sunnyvale, California sold a companion for the teacher, view the Elementary.
AOS™ is a trademark
of Texas Instruments.
Math Explorer ™ is a trademark
of Texas Instruments.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, April 13, 2009. No reprints without written permission.