DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Longines Symphonette Electronic Calculator (TI-2500B)
| Date of introduction: | Display technology: | LED-stick | |
| 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: | 2500B313624 |
| Batteries: | 3*AA NiCd or 4*AA Alkaline | Date of manufacture: | 1973 |
| AC-Adapter: | AC9130 or AC9120 | Origin of manufacture: | USA |
| Precision: | Integrated circuits: | TMS0119 | |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
This
calculator sold by Longines Symphonette could be easily recognized as a Texas
Instruments Datamath calculator.
The main differences between the original and the badged calculators are the
olive-green color of the housing, the grey keys and the Longines Symphonette
label.
A more detailed comparison between the seven known Datamath
Versions could be found here.
Currently three of them are reported to be sold under the Longines Symphonette
label:
| •
TI-2500 Version 1 • TI-2500 Version 2 • TI-2500B |
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.