[TheForge] Re: Price of steel & scrap

[James Binnion]

>Well, this is out of my line, so I couldn't say.  Very different
>requirements, I understand.  In digital, you deal with , timed switching
>with a stabilization time between digital states.  Clocked, in other
>words.  Analog works more-or-less continously. 
>
>For example, if you want to see an exponential rise or fall in digital,
>you plug in the equations and plot out the numbers as they are
>calculated.  In analog, you wire up a resistive-capacitive circuit turn,
>apply power and presto, there's your exponential rise or fall.  Very
>fast.  I'm just about at my limit of understanding of the thing,
>however.


I used to do printed circuit manufacturing and some design of both 
analog and digital circuitry be fore I gave it up to pursue my metal 
work. I don't doubt that the bean counters had their usual screwed up 
reasons for closing the shop but the cost of a circuit board really 
has little to do with whether or not it is for analog , digital or 
some hybrid of the two. It has more to do with the number of inter 
layers and holes and profile routing than what type of circuit. The 
exception would be for specialized microwave circuits where the 
substrate is something other than glass filled epoxy.
-- 
Jim Binnion