14 Sep
2001
14 Sep
'01
10:43 a.m.
I've never
seen SPDT dipswitches in computers.
The closest thing I've seen, I believe, are the dip switches
in Sears Garage Door Openers and the handheld clicker for them.
They've got two positions + and - but a central neutral
position IIRC which makes them kind of SPDT with a neutral position.
I remember a couple of Holtek (I think) chips for remote control where
the address inputs were 3-state (pulled high, pulled low, or floating).
Does said garage door opener use those, I wonder?
-tony