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

[Corey Cohen]

The Scelbi 8H and 8B do not use crystals for system clocks which is why they need military spec parts in the timing circuits or they drift as the temperature of the system changes.  

corey cohen
uǝɥoɔ ʎǝɹoɔ

> On Mar 13, 2016, at 5:32 AM, Ben Greenfield <ben at cogs.com> wrote:
> 
> Hey All,
> 
> I have one simple specific question, without a simple answer and general call for examples.    
> 
> I’m researching timing clocks used in general purpose digital computing. I’m starting to think that Ace/Pilot Ace by Alan Turing is the start of clock based general purpose computers. I’m starting to conclude the earlier computers were all basically clocked by the media holding the instructions.
> 
> Is this correct? 
> 
> I’m currently looking for examples of general purpose computers that do not use crystal based clocks.
> 
> Any thoughts appreciated.
> 
> Ben
> 
>