13 Feb
2008
13 Feb
'08
10:08 p.m.
On Wed, 13 Feb 2008, dwight elvey wrote:
Triodes were made before 1900. If it is just
materials but not
known, one might use zinc oxide negative resistance devices.
Relays are simple enough and well known by then. Output isn't
a big issue. Memory is always a problem but input could easily
be done with punch cards ( also well known then ).
Relays can be use for memory but they are expensive. I've always
thought that a bunch of reed relays with small magnets to bias them.
Too bad they didn't have reed relays then.
Is there any reason why reed relays didn't exist then? It's not
difficult to make them by hand. Making them hermetically sealed, that
might be tricky.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?