DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-2500 / Datamath Version 3
| Date of introduction: | August 1973 | Display technology: | LED modules + lens |
| New price: | Display size: | 8 | |
| Size: | 5.5" x 3.0" x 1.7" 139 x 76 x 42 mm3 |
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| Weight: | 6.7 ounces, 191 grams | Serial No: | 2500024221 |
| Batteries: | 3*AA NiCd or 4*AA Alkaline | Date of manufacture: | |
| AC-Adapter: | AC9130 or AC9120 | Origin of manufacture: | USA |
| Precision: | Integrated circuits: | TMS0119 | |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual: | 
(US: 2.4M Bytes) |
The
third version of the different Datamath calculators could be easily recognized
at the nice battery compartment on the bottom. This calculator uses either 3 rechargeable
NiCd batteries or 4 alkaline cells instead the 4 built-in NiCd batteries
behind the closed bottom of the Version 2.
A more detailed comparison between the ten known Datamath
Versions could be found here.
In October 1973 with the TI-2510 a Datamath with absence of rechargeable batteries was introduced.
The Version 3 of
the Datamath was later renamed to TI-2500B. The only
difference we discovered up to now is the changed display type. Don't miss the
first prototypes of the TI-2500B.
Read more about Texas Instruments' "Calculator-on-a-Chip".
The last evolution step of the Datamath calculator was the odd
TI-2500-II introduced more than two years after the
original type.
Datamath™ 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.