12 Mar
2011
12 Mar
'11
2:08 p.m.
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