Re: Question for you computer guys.
Most PCB software does have some CAD like similarities, but the autorouters are more like artificial intelligence.They have to figure out where to route all the traces without causing shorts or breaking certain guidelines.They have extremely complicated algorithms, some cost upwards of $30k per yearly license.I use a cheaper one that only runs $4k a year, so it's quite a bit slower.On one fairly complicated 4 layer board I did for a buddy once, it took my 1.5G P4 about 3 hours to complete.
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