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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
   
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.

EX22_DISP.jpg (45747 Byte)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.

EX22_PCB.jpg (66410 Byte)T
he 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.



 

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If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, December 5, 2001. No reprints without written permission.