All unmarked images ©2007- www.soemtron.org
Only 526 Soemtron ETR224 printing calculators were made during the units six year production between 1968 and 1974. By modern standards they are extremely large and cumbersome, but very typical of their age - the 1960's. This section shows a few views of a typical Soemtron ETR224, of which we believe that there are only four left in the world -
To date we have found that very little information, if any, exists about the Soemtron ETR224 and certainly no technical information appears to have survived at all.
If you have any further historical information, circuits, drawings, photographs, data or manuals about the Soemtron ETR220, 221, 222, 224 or their manufacture, test equipment (Prüfgeräte) or you just know more about the Soemtron companies in general then please let us know, contact us.
Inside the 224
|Photos ©2009 Rüdiger Kurth and ©2009- www.soemtron.org|
(Click an image for a larger version)
We have started the restoration of our 224, which we expect to take about a year, with progress documented in the pages linked below. Like the 220 pages we hope that the information gathered from this process will evolve into a full technical documentation set for the Soemtron 224.