DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Exactra 31 by Texas Instruments
| Date of introduction: | 1974 | Display technology: | Panaplex II |
| New price: | $49.98 | Display size: | 8 |
| Size: | 8.4" x 6.2" x 2.5" | ||
| Weight: | 32 ounces | Serial No: | 3100 046041 |
| Batteries: | Date of manufacture: | wk 37 year 1974 | |
| AC-Adapter: | 120 V | Origin of manufacture: | USA |
| Precision: | 8 | Integrated circuits: | TMS0109 |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
Nothing
else than a restyled TI-3000 with an additional
sliding switch to select between Chain and Constant mode. We already know this
wooden foil from the Exactra 22 or
the Western Auto M4986.
From the technical point of view the Exactra 31 uses the calculator chip borrowed from the TI-3500 on a printed circuit board found in the TI-3000.
Don't miss the rare TI-3510.
Fellow collector Michel
Zwawiak reported recently a different design of the Exactra 31 sporting
white keys with the serial number 3100 007108. Unfortunately is the production
date label missing. Gilles Collas just reported with 3100 007195 a second "white
key" Exactra 31.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.