220 Gallery
S#105669
Soemtron 220 Calculator Gallery
All unmarked images ©www.soemtron.org / .com 2007-
Many thousands of Soemtron ETR 220's were made during their production run and by modern standards they are large and cumbersome, but very typical of their age - the 1960's. This section shows a few views of a typical Soemtron ETR 220 in good condition owned by calculator collector Serge Devidts. Click any image for a larger version. | |||
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 Inside view |
 Decimal point selection |
 Nixie tube display close up |
| Pictures ©2007 Serge Devidts, used with permission, for more see his site here. | |||
| A very early reversed order 220 ........ | |||
Photos here show a glimpse of the reversed order build of the early Soemtron 220's along with the differing power supply configuration. | |||
 Reversed board order |
 Regulator heatsink |
 S#27027 |
Pictures ©2009 Philipp Fabian Benedikt Maier |
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