Foxboro systems/ was Re: PDP-11 Operating Systems

William Donzelli wdonzelli at gmail.com
Sat Mar 12 16:08:04 CST 2011


> But the original consumer-type PCB technology was more often formica or phenolic-type circuit boards with traces that were stamped from sheet foil and then glued to the phenolic.

This method of making circuit boards was very obsolete by 1950 or so.
Even the cheap stuff has been printed and etched for a long time,
quite like today.

--
Will



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