From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: resistor decoder
References: <firstname.lastname@example.org> <email@example.com>
Date: Sat, 07 Sep 2002 05:25:35 GMT
NNTP-Posting-Date: Fri, 06 Sep 2002 22:25:35 PDT
Beau Schwabe wrote:
> On Fri, 06 Sep 2002 16:45:55 GMT, firstname.lastname@example.org
> (Ben Bradley) wrote:
> >In sci.electronics.design, Oliver Dain
> >>I've just released GUI application I wrote that converts resistor color
> >>codes to values and vice-versa (the code is GPL'd). Granted you don't need
> >>an application to do this for you, but sometimes its handy. The
> >>application will run on Linux and Windows (should run on other Unixes and
> >>Mac OS X too but I haven't tested that). If you happen to have your
> >>"workshop" right next to your computer, like me, you may find this useful.
> >>If you're interested its available at: http://resistor.sourceforge.net/
> > I started on my way to learning the resistor color code when I
> >assembled my first Heathkit that I got on my birthday at age 8. That
> >would have been 1965. Ever since college I can read most resistors as
> >if the numbers were printed right on them. I can never remember which
> >multiplier is which for under 10 ohms, though.
> > I noticed digikey has SMT resistors priced less than leaded, and a
> >larger selection of SMT as well. Now that I've known the resistor
> >color code for decades (still useful for some things such as the wire
> >numbers of color-coded ribbon cable, logic analyzer probes and such),
> >everything is surface mount with a number laser-etched on it that I
> >need a magnifying glass to see. I need a digital camera that will read
> >those for me, as well as giving the part number so I can
> >cross-reference each flea, er, component to a schematic and an 8x
> >printout of the PCB layout.
> I too started when I was about 8, but 8 for me was 1977. I guess when
> I was 10 or so I went to all the trouble to write a program on my
> Atari 400 that basically functioned as a multi-meter... Only this
> "multi-meter" had the option to read a resistor value and display the
> corresponding color on the computer screen as well as the numeric
> value.... ... Needless to say, I never used the program again after
> "playing" with it for about 5 minuets after I finished writing the
> ....Now days, if I want a resistor I determine what layer of metal I
> am going to draw my resistor in, and figure out the number of
> "squares" required to make the equivalent value resistor for that
> layer of metal. Length/Width equals the number of squares, and
> depending on how much current I need to pass through the resistor will
> dictate Area in which it will occupy.
But the rubber hits the road outside the chip. Some fast digital
interfaces require fancy footwork outside of the chip to make things go.
In mixed signal, the work on the outside of the chip is needed to make
the chip do anything useful. We do not yet have the level of integration
required to get rid of me.
Of course, I'm an old fart.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons email@example.com