[sdiy] cool TV/oscilloscope hack..

[Scott Gravenhorst]

You know, I once used an Eico 460 as a character display.  It was a strange
and simple thing, the processor I had (1 MHz 6800) presented an 8 bit port
with one byte of display data at a time along with an alternating strobe, 0
for the first byte switching to 1 for the second, etc.  I then designed a 555
timer based PLL that had a 3 bit counter in the loop, the input was the
alternating strobe.  The counter was used to address a mux which routed the
selected bit to the Z channel of the scope.  It was very cool the first time I
fired it up and saw part of the ASCII character set displayed on it.  I think
it was only 16 characters by 16 lines, but it _worked_.

Robotboy8 at aol.com wrote:
>
>Content-Transfer-Encoding: 7bit
>
>Or you could go the other way around:
>http://www.earlytelevision.org/jan_1941_radio_news.html
>
>       -eric
>

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