DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This Exactra 20 was manufactured
in August 1974 by Texas Instruments |
The Exactra 20 with its 6-digit display and costly keyboard. |
The double-sided printed circuit board (PCB) of the Exactra 20. |
Close-up of the TMS0135 single-chip calculator circuit. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, January 4, 2018. No reprints without written permission.