Re: [vcf-midatlantic] examples of non-crystal based clocks in digital computing?

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I’m starting to conclude the earlier computers were all basically clocked by the media holding the instructions. Is this correct?

I don’t believe so. ENIAC had a master pulse generator. Brian Stuart (on this list) is making his own ENIAC simulator. Thus he'll have a mich deeper understanding than the rest of us about how the computer really worked.