Re: gEDA-user: Barrie Gilbert

[Karel Kulhavy <clock@xxxxxxxxxxxxx>]

On Wed, Sep 06, 2006 at 09:55:09AM -0400, Dan McMahill wrote:
> John Dozsa wrote:
> >If you have used a Tektronix plug-in style Oscilloscope, 74XX series, 
> >you have seen some of Barrie's early design work.  He designed the 
> >stroke generator that creates the data characters on the screen, e.g., 
> >the volts and time scales.  It's not a raster scan that forms the 
> >characters but the CRT beam is actually deflected in the pattern needed 
> >to create the symbol.  He worked for Tek at the time, before his 
> >employment at Analog Devices.
> >
> >John Dozsa
> 
> I love those.  Here's some other geek trivia.  The plug-in unit has to 
> tell the mainframe what character to display.  So what sort of signaling 
> is it?  Obviously it is a quantized signal since there are a finite # of 
> characters youcan display, but is it a parallel binary bus?  Serial 
> binary data?  (Hint: neither of these).  I'll wait for a bit before 
> sharing the answer :)

Some kind of multivele analog signal?

CL<


_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user