DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Exactra 22 by Texas Instruments
| Date of introduction: | 1974 | Display technology: | LED-stick w/o lens |
| New price: | Display size: | 8 | |
| Size: | 5.1" x 2.9" x 1.3" 130 x 74 x 34 mm3 |
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| Weight: | 5,1 ounces, 144 grams | Serial No: | 2200078672 |
| Batteries: | 3*AA | Date of manufacture: | unknown |
| AC-Adapter: | AC9160 | Origin of manufacture: | USA |
| Precision: | Integrated circuits: | TMS0803 | |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
The
Exactra 22 is yet another member in the Exactra line from
Texas Instruments. Compared to the Exactra 21 you'll notice an additional
connector for an external power supply.
Dismantling
the Exactra 22 revealed a small surprise, the LED-display found in this
particular calculator was manufactured by Bowmar. We know the Opto-stick display
with he small numbers already from the TI-2500B.
The
printed circuit board (PCB) of the Exactra 22 is identical with the one found in
the Exactra 21.
Don't miss the Exactra 23 loaded with all features.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.