[comp.arch] PCB technology parameters wanted

omtzigt-theo@CS.Yale.EDU (Theo Omtzigt) (08/28/89)

 Having to design (academically) systems comprised of chips, PCBs and
cabinets, I am interested in the physics of these technologies.
Does anybody know the answers on the following questions:

1- What is a typical load a chip buffer has to drive assuming the
   signal stays on the PCB?

2- What is a typical load a buffer has to drive if the signal goes
   off the PCB, onto a multilevel backplane?

3- What is a typical wire width of PCBs and backplanes?

4- What is the typical capacitance/resistance/inductance of a line
   of current PCB technology?

5- What is the typical capacitance/resistance/inductance of a line 
   of current backplane technology?

6- What is the material they use on PCBs and backplanes, copper,
   aluminum, or some fancy composite?

Thanks in advance,

Theo Omtzigt
omtzigt-theo@cs.yale.edu