18 Dec
2007
18 Dec
'07
3:12 p.m.
On Friday 14 December 2007 20:10, Tony Duell wrote:
Having scrapped a whole lot of VCRs, including at least one that I know of
that was designed to operate on European standards, I probably have some of
those parts around, if anybody has a use for them...
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
What about
acoustic delay line memory?
It is at least as "classic" as a drum but would be much easier to build.
AFAIK the CSIRAC was a bit-serial, delay memory machine.
I wonder if you could use those glass delay lines that were used in PAL
colour TV receiver until fairly recently (and there must be plenty still
around)? Alas they have a somewhat odd delay time (a little less than
64us -- one line period of the European TV signal), but I am sure you
could fiddle the master clock to compensate. There were some similar
dalay lines of exaclty 64us delay, used to store a picture line in the
drop-out compensator circuit of early VCRs, but those are going to be a
lot harder to find.