> Mr. Newberry is correct about the origin of the term, except that I'd think > it began with CAD systems. Generating a rat's nest was simple for a > computer but not at all simple for a manual designer, so I never saw a > manually-done rat's nest drawing.
Unless we can consider the big pile of mylar cut-ups of parts sitting in the middle of the layout prior to automanual placement as a "rats nest" Robert M. Wolfe, C.I.D. [EMAIL PROTECTED] ----- Original Message ----- From: "Abd ul-Rahman Lomax" <[EMAIL PROTECTED]> To: "Protel EDA Forum" <[EMAIL PROTECTED]> Sent: Friday, February 08, 2002 12:42 PM Subject: Re: [PEDA] terminology: ratsnest > At 05:47 AM 2/8/2002 -0500, Darryl Newberry wrote: > >The common rat (e.g. Rattus norvegicus) builds its nest out of any handy > >material such as twigs, grass, or leaves. The result has a chaotic, jumbled > >appearance. It is just another quirky Anglicism to say that something looks > >like a "rat's nest". > > > >This all started back when printed circuits were done with tape and donuts > >on mylar sheets--the "rat's nest" was an actual pictorial drawing showing > >the placement and the connections drawn as straight lines between pins. The > >nickname and the idea stuck and carried over into CAD systems. > > > [EMAIL PROTECTED] > Abdulrahman Lomax > Easthampton, Massachusetts USA > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
