Boy that (common) mis-spelling (always) really cracks me up! ;-))

Leo wrote:

> I'm, thinking that the today PC at 400 Mhz and over, with a
> bidirectional parallel printer port should be a nice platform to build
> a simple and most economic logic analazer.

  Don't get that enthusiastic about the parallel port.  It's not *that*
fast and is most unlikely to handle in real-time the datastream you
would want (and USB wouldn't either).

  You therefore need a capture system and then the speed of the PC is
far less significant unless of course you use Windoze software :)

  Caveat:  Experience:  No!

  Oh yes, a design was published in the local (Australian) mags in the
last year or so.  Electronics Australia or Silicon Chip.  May have
indexes on website.
--
  Cheers,
        Paul B.