FPGA VAX update, now DIY TTL computers

Chuck Guzis cclist at sydex.com
Wed Nov 9 11:46:07 CST 2005


On 11/9/2005 at 10:46 AM Allison wrote:

>The serious limitation for tubes has always been the heat and power
>from the filament rather than the heat and power used for functional 
>circuits. 

So whatever happened to tunnel cathodes?  It was a very hot topic in the
60's.

Cheers,
Chuck






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