DATAMATH CALCULATOR MUSEUM
box of a very early Radio Shack EC-100 calculator shows its
|This Radio Shack EC-100
(Version 1) was manufactured
in September 1972 by Texas Instruments.
|A Radio Shack EC-100
(Version 1) with the [+=] and [-=] keys inserted the wrong
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© Joerg Woerner, October 31, 2021. No reprints without written permission.