DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-12 Math Explorer (China)
| Date of introduction: | 1993 | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 5.7" x 2.8" x 0.45" 145 x 72 x 11 mm3 |
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| Weight: | 3.0 ounces, 84 grams | Serial No: | |
| Batteries: | Date of manufacture: | mth 12 year 1992 | |
| AC-Adapter: | Origin of manufacture: | China (T) | |
| Precision: | 12 | Integrated circuits: | Toshiba T6M39S |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The Math
Explorer is another calculator introduced by Texas Instruments to perform
fractional arithmetic for elementary school. In opposite to the Galaxy
10 the display size doesn't allow scientific notation. Nevertheless
calculating accuracy is 12 digits!
Dismantling
this TI-12 Math Explorer manufactured in December 1992 by Toshiba in China
reveals a clean design centered around a Toshiba T6M39S single-chip calculator
circuit.
The calculator was produced both in Italy and China, view the
minor differences here. Later the same keyboard layout was used with a more stylish
housing. Compare it here.
Math Explorer™ is a trademark of Texas Instruments.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.
Math Explorer ™ is a trademark of Texas Instruments.