On 2002.11.24 19:36 Tony Duell wrote:
> > I know this laws very well, I am studying EE. :-)
> I am not convinced that one necessarily follows from the other. I've
> met plenty of so-called EE's who can't calculate (say) the voltage on
> the tap of a potential divider.
I can, belive me I can. ;-)
Some time ago, when I didn't have a multisync monitor, the first thing
that I did when I got a new "toy" with graphics card was to warm up the
good, old HP scope. I used it to check if the video timing would fit to
one of the several fixed frequncy monitors in my collection...
> I have to say that anyone who attempts to work on classic computer
> hardware (or any hardware for that matter) without a basic
> understanding of electrical engineering (including things like
> V=I*R [1]) is making life difficult for themselves.
I second that. I know a collector who knows nothing about hardware and
how it works. But he can tell you a lot about Lisp and how wonderful his
Symbolics machines / Genera are from a programmers point of view. I
found his machines interresting due to the bit slice CPU design with
loadable micorcode. When I told him that I builded a simple voltage
inverter (charge pump) to make the RS232 work on the Sun 4/600 MP he
looked like it was black magic to convert +12V to -12V. (The Sun 4/600
MP boards needs -12V for the RS232, even -5V are not enough. As I
mounted this board in a Sun 3/60 case that doesn't provide -12V, I could
not use a serial console.)
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
Received on Sun Nov 24 2002 - 18:03:00 GMT