so you just bought a shiny new motherboard and after you're done ooing
and eyeing over the heat sinks that say extreme gamer that are designed to look
like a battle axe or whatever you might have noticed all those tiny traces on
the board that connect all of your ports headers and sockets together and
actually make the board light up and function correctly and although they're
not particularly exciting traces on
printed circuit boards or pcbs have basically made all of modern Electronics
possible in fact before they became widespread in the latter half of the
20th century connecting every electrical
component inside of an appliance looked a little something like this a huge mess
of individual wires this is actually a
look inside of a TV from 1948 I mean
imagine trying to build a computer or even bu a flat panel TV if you had to
deal with that fortunately the idea of
embedding wires in a flat piece of fiberglass really took off as the years
went by making it possible to fit a PC in a backpack instead of a giant cabinet
but how exactly then do they pack so many important Connections in such a
small space the process is actually
somewhat similar to how CP user manufactured which you can learn more
about in this video albeit at a bit of a less complicated scale slices of
fiberglass are stacked together and treated with a resin that makes them
stick to each other to make one solid slab then layers of copper are applied
to both sides and Co it in a chemical called photo resist after this a pattern
that matches up exactly to the traces that are supposed to go on the board is
placed on top top then the whole thing is exposed to UV light the board is then
washed which well washes away the
uncovered areas leaving tracks of copper
these tracks serve as a base for how the PCB will ultimately look after a couple
of more steps including etching additional copper and more washing but
keep in mind that this process is often done in layers which is why it's a
terrible idea to try and drill through your motherboard if you're having
trouble mounting a cooler to it the internet has more than a few Tales of
people that tried to do this only to find out that their board didn't work at
all afterwards because they drilled in the middle of traces that were visible
from the outside but went right through
ones that were inside of it but that
isn't to say that boards don't get drilled at all during manufacturing at
the factory boards not only get mounting holes drilled through them for whatever
four form factor they happen to fit in but they also get small holes to
accommodate connections for small electrical components like chips
capacitors and resistors as well as Tiny
interconnects between the different layers of copper traces so after things
like PCI Express slots heat sinks and CPU sockets are mounted or soldered to
the board it's basically finished but since a PCB is just a collection of
electrical connections on some kind of of a substrate you don't actually need
any fancy manufacturing processes to make a simple one in fact you can even
buy markers that will dispense electrically conductive ink onto special
paper so you can literally draw your own working PCB pretty cool but given the
inherent complexity in manufacturing something like an ATX motherboard I
wouldn't count on being able to make your own one of those and maybe stick to
you know making LED art that you can stick to your refrigerator
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