DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-25 (Yellow Polarizer)
| Date of introduction: | 1978 | Display technology: | LCD (yellow) |
| New price: | Display size: | 8 (5 + 2) | |
| Size: | 5.3" x 2.9" x 0.35" | ||
| Weight: | 3.0 ounces | Serial No: | 93595 |
| Batteries: | 2*LR44 | Date of manufacture: | mth 05 year 1978 |
| AC-Adapter: | Origin of manufacture: | Japan | |
| Precision: | 9 | Integrated circuits: | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manuals: | 
(US: 6.7 MByte)
(EU: 18.6 MByte) |
This
TI-25 with unknown history seems to be a misfit: The yellow polarizer filter
covering the liquid crystal display would suggest that it older than the first
version of the TI-25. The green [ON/C] key on the other
hand would place it the time frame of the second version of the
TI-25. The date code
finally matches the first version.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, February 17, 2011. No reprints without written permission.