On 6/10/06, kravnus wolf <kravnus@yahoo.com> wrote:
>
>   Or maybe he has x-ray vision :) Just kidding.  But
> seriously how does one differentiate 2 layer and 4
> layers? I can't see the traces between them.
>
> John
>
If you can only see some traces on one side and
not the other side (as long as they are not under
some component), then it is not a 2-layer board.
Often 4-layer board will have large ground and/or
power layer so you can easily differentiate them from
2-layer board.

Regards,
Xiaofan
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