25 Jan
2006
25 Jan
'06
9:57 a.m.
From: "Chuck Guzis" <cclist at
sydex.com>
On 1/24/2006 at 10:18 PM ard at p850ug1.demon.co.uk wrote:
Hi
A fellow I know named Ed McLaughlin built one that took him
to the national science fair. I don't know if it is the same
one but this was in the early 60's some time.
Dwight
How about using uniselectors and having decimal
(or octal) memory ?
I suppose you might also include some Strowger switches for address
decoding...
Back when I was in high school (a very long time ago), a fellow built a
tic-tac-toe "computer" using stepping relays and other telephone gear,
including a rotary dial where one input one's move. (only 9 possibilities,
so that was convenient). The contraption would make its own move in
response. Readout was a 3x3 grid of 25W incandescent lamps.
It was fun to watch.
Cheers,
Chuck 
25 Jan
25 Jan
10:16 a.m.
On 1/25/2006 at 9:57 AM Dwight Elvey wrote:
Hi
A fellow I know named Ed McLaughlin built one that took him
to the national science fair. I don't know if it is the same
one but this was in the early 60's some time.
Timeframe is about right, but my experience wasn't Ed. I suspect that the
design was fairly popular for science fairs. I recall that the Museum of
Science and Industry in Chicago even had one around that time. It was a
great "hands on" display!
Cheers,
Chuck
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