DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The calculator circuit
was manufactured in the 50th week of the year 1973 by Western Digital and featured already a full memory. |
The printed circuit board of a second EC-300 carries a magic
number: 13-04-709-479. This is an identifier of Texas Instruments ! |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, September 20, 2002. No reprints without written permission.