DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1270
| Date of introduction: | April 21, 1976 | Display technology: | LED-stick |
| New price: | $18.95 | Display size: | 8 |
| Size: | 5.5" x 2.8" x 1.4" 138 x 70 x 35 mm3 |
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| Weight: | 3.9 ounces, 110 grams | Serial No: | 0011144 |
| Batteries: | 9V | Date of manufacture: | wk 30 year 1976 |
| AC-Adapter: | AC9180 | Origin of manufacture: | USA (LTA) |
| Precision: | Integrated circuits: | TMS0974 | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual: | 
(US: 2.3 MByte)
(EU: 3.5 MByte) |
The
colorful TI-1270 was introduced as a late member into the growing TI-1200
family. Is it a basic calculator or a scientific calculator? Compare it with the SR-11,
introduced only 2 years earlier as a powerful scientific calculator.
Within the Datamath Museum the decision was made based on the
technology, we'll keep
it in the Basic Album. If your read more about the calculator chip inside the
calculator you'll notice the similarity to the TI-1200.
Dismantling
the TI-1270 reveals a printed circuit board (PCB) identical with the later
production runs of the TI-1200 and TI-1250 calculators. The only change is the
single-chip calculator circuit, we located a TMS0974 instead the TMS0972.
We located recently a TI-1270 sporting a almost red
faceplate, we are not sure if this color was intended or is simply a quality
issue.
A similar calculator was sold as Citation M4988 from the distribution company Western Auto.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 20, 2009. No reprints without written permission.