Karel Kulhavy wrote:
On Wed, Jan 05, 2005 at 09:14:08PM -0500, Daniel Nilsson wrote:
On Wed, Jan 05, 2005 at 07:10:34PM -0500, harry eaton wrote:
but nothing beyond 6 layers. It is rare indeed that more than 8 copper layers are required. Usually when 10 and 12 layer boards are made it is because the designers are lazy.
The Pentium processor chip has only 7 wiring layers; it must be of "medium
to low" complexity!
Harry,
I think this brings up an interesting point, you need to use the right
tool for the job. With that I mean that there are "classes" of tools
for various complexity levels on a design. For the complexity levels
that I think the gEDA tools aim today I agree that more then 12 layers
should be very rare. But I can on the other hand say that at work we
have very few boards (if any) that would be routable on a 12 layer
PCB. I have worked on several designs that required 20 layers to be
routable for example. But that doesn't really matter because we would
not be able to use gEDA/PCB for layout work for so many other reasons
so I consider what we do at work as a different complexity level that
the gEDA tools currently don't aim for. But for my home projects PCB
is a great tool and exactly what I need to do the job, which is a job
of much lower complexity.
How many layers does a typical motherboard have?
Cl<
Hello
ciao
Florian