The mystic animal PCehus
digitalus
In
our academic technical world counts not the own thougth, people listen
to the PCehus digitalus, a mystic animal, which is a constant collegue
to human beings since thousand of years. Many of us don't feel the
existing animal close to us, it's hiding, hiding in his environmental
like a Chamaeleon
(pictures) and it permanently defines new constants we have to follow.
It
used many names in his history:
-
Scared "it's better to run away from the fire, instead of using it".
-
Believing "we are living on a slice" (that's still correct!)
-
Strategie "soldiers need bright coloured uniforms, the general must
watch them easily".
It has a lot of children and grand children,
one of it works in the electronic:
How
works the PCehus digitalus in the electronic?
Blind trusting in
technology and painted safety cost firms millions of dollars every year. Many
circiuts are developed and trusted by simulation too much. After building up,
it's a terrible task to keep them a live. People try to control them by
mathematic for every price and time. As a result there a tons of paper very nice
designed with fine funny colours to impress the people who are the deciders in a
company. After months of hard discussion is borned a complicated, genmanipulated
layout. After some time the "fire" of these layout goes off. The first
hurdles are observed and function will be poor on some points. The dicision will
be, "the fire needs new or better food", let's take petrol, petrol
like many "meetings", "redesign" or as a special weapon
"the external expert". It's always the same story.
What
happens with the real thinking engineer, he only want's to reach his target in a
fast simple way? he learns the new laws:
-
before you start
working at all, do a detailed documentation of work for the one who gets
your job after you.
-
do what you want,
but never take tools like an solder iron in your hand, you are not a simple
electronic worker.
-
if you design
something, try to find the mathematical proof and define the school medicine
new in the way somebody demands it from you
-
your time is so
expensive, impossible to do something by your self another one can do for
you.
-
the 10 AAAAAAAAAA's -
alle anfallenden Arbeiten auf andere abwälzen, aber anschließend
anständig ansch.....n. (I can't translate - the joke is that every words
starts with "a") all necessary task tell to do others, but after
they've finished their work telling them bad.
How could it be
better?
A kind
of faster and better electronic development, it's a classic
circiut with first simple build up prototypes. And a well test equipment
labority is a must for any fast work. The results will be much more
closer to the truth. The circiuts works at the beginning in many cases
only low and bad, because all real problems in electronics you see and
feel them at once, not some months later when the others still believe
their simulated circiut will work so good.
It's
wrong to do all steps of electronic design within on simple step,
using only circiut simulation and then the next step will be the layout, no
- it won't works good. Better to start with
prototypes step by step, you'll faster reach your targets. First and
most difficult task, you need to find your schematics, the rest is in
most cases easy. Think, a simulation is always only so good like the
model behind the part
For
all circiuts most important and difficult, how to get the right
schematic?,
the rest will be easy and it's secondary. Think the right schematic and
weel suitable parts most problems goes away.
If
all all modulare parts of a big circiut are under control, next step to
combine them together and to understand "what's changed now"
after understanding please do the layout. And on this simple step it
won't happens much, if so you'll find it fast. But if you do all these
steps in one, you need so much luck. There are too many various
parameters. Change step by step.
The
solution for circiut problems is sometimes so simple, but for many
parameters very difficult, time demanding or sometimes even impossible. And
that's the bread for the "external experts" the designer is desperated and
forced to do something he will hire external ones. And with luck the expert
won't find not much more than exactly these things the designer told him before.
The designer will be very happy about it, the expert is not more clever than
himself. Finally the problem looks in the whole company as an big problem, and
the winner will get an award for finding the solution.
Together
with many people and a lot of time and money they'll find the solution. Full of
proud all together: "we in our company produce very difficult complex
electronic" Yes, it's true you produce it, but how much investigations,
time and money were necessary to reach your targets? With a little bit more
truth in the beginning of the project this terrible error would have never been
happened and reached your layout at all ! My friends that's the the secret to
safe time and money.
Don't convert a small fly to a flying elephant, fight against problems at the
beginning not when you should have finished already. Forget about "milestones"
and other nonsense created by economical people, who have never done any own
circiut in their life.
It
would be a wonderful economical result to start work with more respect to the
truth.
But
this is seldom to see. Everbody have his own reason why not to do. Water can
mill stones, even a rock, but no wooden heads or a Camel
(pictures), they swim away oder drink it out. My head takes it with humor and
I'll won't stop to work.
