27 Feb
2007
27 Feb
'07
5:52 p.m.
On 2/27/07, listmailgoeshere at gmail.com <listmailgoeshere at gmail.com> wrote:
Hi cctalkers,
A while back there was a URL posted somewhere on this list about a
(1950s?) character generator which worked solely by mixing harmonics,
with X-Y output to connect to a display tube. It could only generate
the digits 0-9, but was a seriously impressive piece of kit
nonetheless.
Found this, but this is probably something different that what you
were looking for.
"X-Y alphanumeric character generator for oscilloscopes"
http://www.freepatentsonline.com/3866210.pdf
BTW, this this the scheme that the scope interface of the SYM-1 uses?