smsmith@hpuxa.ircc.ohio-state.edu (S. Smith) (11/02/90)
I've seen "6 layer" motherboards advertised, and the company I might buy my computer from has one of these. What does "6 layer" mean? Sorry if this is a simple question. I have combed through the "Winn Rosch Hardware Bible" and the "Illustrated Dictionary of Microcomputers" without finding a reference to this. S. Smith <smsmith@hpuxa.ircc.ohio-state.edu>
kaleb@thyme.jpl.nasa.gov (Kaleb Keithley ) (11/02/90)
In article <1990Nov1.171839.13283@magnus.ircc.ohio-state.edu> smsmith@hpuxa.ircc.ohio-state.edu (S. Smith) writes: >I've seen "6 layer" motherboards advertised, and the company I might >buy my computer from has one of these. What does "6 layer" mean? Well, if a one-layer board has copper traces on one side, and a two-layer board has copper traces on both sides, then a n-layer board may be made by laminating n-2 very thin one-layer boards with a very thin two-layer board. It's just another way of cramming more circuitry (traces, not chips) into a fixed size space. Most 486 boards, and I expect a lot of 386 boards are 6-layer boards. A lot of the clone-XT motherboards were/are available in either 2 or 4-layer boards, and I'd guess that all the 286 motherboards are 4-layer boards. -- Kaleb Keithley Jet Propulsion Labs kaleb@thyme.jpl.nasa.gov "...we need a bigger boat"