DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This Radio Shack EC-4000 was manufactured
in July 1979 by Texas Instruments in Abilene, TX (Date code ATA 2979 » wk 29 yr 1979). |
The printed circuit board
(PCB) of the EC-4000 looks very familiar to us. It is 100% identical with the Texas Instruments TI-57 Programmable. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, November 11, 2009. No reprints without written permission.