Hard disk material

[Dave McGuire]

On Nov 25, 2008, at 9:28 AM, Jules Richardson wrote:
>>> (My brain wants to say it was "how to build a working digital  
>>> computer", but I could be wrong there). I wonder if anyone ever
>>> actually built one that worked? :-)
>> Your brain is not leading you astray.  That's the book.  Here's  
>> the PDF version:
>> http://www.bitsavers.org/pdf/paperClipComputer/ 
>> HowToBuildAWorkingDigitalComputer_Jun67.pdf
>
> That claim of some drums operating at 75,000rpm has to be a typo...  
> I can believe 7500 - but 75,000? Ouch!

   Yeah really...if that were to break loose, it'd probably go  
through a wall.

             -Dave

-- 
Dave McGuire
Port Charlotte, FL