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| Donner 3500 analog computer. | Donner 3500 analog computer. | Donner 3500 analog computer rear. | Donner 3500 label. | Donner 3500 analog top. |
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A second model 3500 table top analog computer.
| Donner 3500 analog computer. | Donner 3500 analog computer front. | Donner 3500 analog computer rear. | Donner 3500 label. | Donner 3500 boards. |
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Various Donner problem boards.
| Donner 3430 problem board #1. | Donner 3430 problem board #2. | Donner 3430 problem board #3. | Donner 3034 problem board. |
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Systron Donner SD80 large analog computer, solid state.
| SD80 overall view (with some Heathkits on top). | SD80 left side showing digital voltmeter. | SD80 problem board #3. | SD80 right side coefficient pots. | SD80 left side opened up. | SD80 right side opened up. |
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