Path: utzoo!attcan!darkover!telly!lethe!torsqnt!news-server.csri.toronto.edu!helios.physics.utoronto.ca!ists!yunexus!xrtll!silver
From: silver@xrtll.uucp (Hi Ho Silver)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Layered M/B ?
Message-ID: <1990Jun5.025321.24980@xrtll.uucp>
Date: 5 Jun 90 02:53:21 GMT
References: <6761@ucrmath.ucr.edu>
Organization: Not around here, pal!
Lines: 22

In article <6761@ucrmath.ucr.edu> lulu@ucrmath.UUCP (david lu) writes:
$What does it mean for a motherboard to be "layered"?

   This refers to the number of layers of traces on the board.  Early
circuit boards used only one layer of connections on a side.  Lately,
however, it has become more and more common to put several layers of
traces on the board, each layer being separated by an insulating layer.
Since there are inevitably traces which have to cross paths without
being connected, the use of multiple layers makes circuit board design
a much easier task - otherwise, traces which need to cross would either
have to be run through to opposite sides of the board near where they
cross, or wire jumpers would have to be attached.

   For those who don't know quite what the word "trace" means in this
context, it refers to the "wires" that are formed by a thin layer of a
conductor applied to the board - have a look at a circuit board and
you'll see what I mean.
-- 
   /Nikebo \ Nikebo says "Nikebo knows how to post.  Just do it."\silver@xrtll/
  /---------\_____________________________________________________\----------/
 /yunexus!xrtll!silver (L, not 1)\ Hi Ho Silver \   just silver for short   /
/Silver:  Ever Searching for SNTF \  Life sucks. \  someone buy me a BEER! /