George Neuner wrote:
On Mon, 1 Sep 2008 21:03:44 +0000 (UTC), Martin Gregorie
<[EMAIL PROTECTED]> wrote:
On Mon, 01 Sep 2008 12:04:05 -0700, Robert Maas, http://tinyurl.com/uh3t
wrote:
From: George Neuner <[EMAIL PROTECTED]> A friend of mine had an
early 8080 micros that was programmed through the front panel using
knife switches
When you say "knife switches", do you mean the kind that are shaped like
flat paddles?
Pedantic correction:
"Knife switch" is the wrong term. These are high current switches,
typically used in the sort of heavy duty circuit where the wiring hums
when power is on or in school electrical circuits so even the back of the
class can see whether the switch is open or closed. In these a copper
'blade' closes the contact by being pushed down into a
narrow, sprung U terminal that makes a close contact with both sides of
the blade. Like this: http://www.science-city.com/knifeswitch.html
What you're talking is a flat handle on a SPST or DPST toggle switch. It
is often called a paddle switch and mounted with the flats on the handle
horizontal. Like this, but often with a longer handle:
http://www.pixmania.co.uk/uk/uk/1382717/art/radioshack/spdt-panel-mount-
paddle-s.html
I don't know the correct term, but what I was talking about was a tiny
switch with a 1/2 inch metal handle that looks like a longish grain of
rice. We used to call them "knife" switches because after hours
flipping them they would feel like they were cutting into your
fingers.
That must be a toggle switch (as MG suggested) just not the paddle type.
e.g.
<http://cpc.farnell.com/SW02861/components-spares/product.us0?sku=multicomp-1m31t1b1m1qe>
<http://tinyurl.com/64a8ld>
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