On Apr 29, 2013, at 4:18 PM, IVP wrote:

> When did (proper) PCB CAD start ?

I find claims that Stanford's SUDS ("Stanford University Design/Drawing Sys=
tem) was the "first interactive CAD system for electronics/computer design"=
, and there are articles on it dating back to 1974 or so.  SUDS was used to=
 design the DEC KL10 (1975), Foonly F1, The Livermore S1 supercomputer, Ear=
ly SUN boards (~1982), early cisco boards (~1989), and I don't know what el=
se.  All you needed was your own DEC PDP10 mainframe and a suitable graphic=
s terminal.

Don't forget that a "state of the art" PC circa 1989 was a 386 with 4Mbyte =
of memory and an EGA display.

BillW


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