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Message #73543 of 126777
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Date: 2005-03-09
From: Martin McCormick
Subject: Re: [EE] Wire wrapping insight needed!

Jake Brownson writes:
>Wow, I don't know why everybody is complaining about WWing. In my
>Junior level microprocessors I just completed, and in my PLDs class
>Sophomore year we did _plenty_ of wire wrapping.

	I'll put in my $0.02, here.  It may well be that a beautiful
fabricated multi-layer circuit board is the state of the art, but is
this really the best approach for a class unless that is the purpose
of the class?  Unless one is lucky and it works the first or second
time, the amount of time spent trouble-shooting it and the expense of
new material not to mention that most precious commodity which is time
will quickly slow down what might be an otherwise simple project.

	My Master's degree is in Occupational and Adult Education
which does not, of course, make me all-knowing about everything, but
we had more than one discussion in the course of study about what
makes for good technical education.  If you are trying to teach
specific concepts, anything that raises issues that are not related to
the concepts being tought are distractions.  Some are unavoidable, but
nonetheless, they provide noise which dilutes the signal.

	Wire wrapping isn't state of the art any more, but it doesn't
take a tremendous amount of skill to master.  Fabricating boards is
easier than it used to be, but it still requires skill and practice
along with some specialized materials and tools that may or may not be
available.

	I agree with the technical reasons given by several why WW
isn't good in a production environment, but it is still good enough
to provide a viable alternative for students or hobbiests.

	Follow the guidelines given by several others on the list for
keeping noise out of your circuit and the wire-wrap version will most
likely work just fine.

Martin McCormick WB5AGZ  Stillwater, OK 
OSU Information Technology Division Network Operations Group
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