Schematics of Atanasoff-Berry Computer logic circuits?
wdonzelli at gmail.com
Fri Aug 29 14:28:52 CDT 2008
> Where I think he really shown on the ENIAC however, was in
> getting the level of reliability he did out of the components
> of the day. My understanding is that it was one of the
> earliest applications of worst-worst design and of derating
> the tubes, running them at lower filament and plate voltages
> than normal, to extend their lives.
The Phone Company also did this - and were the other place where one
could find huge numbers of tubes used reliably - but they were such a
secret society that the knowledge never really got out.
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