Re: gEDA-user: Barrie Gilbert

[Dan McMahill <dan@xxxxxxxxxxxx>]

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 :)






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