> On Jun 9, 2015, at 9:27 AM, Noel Chiappa <j...@mercury.lcs.mit.edu> wrote:
>
>> From: Rod Smallwood
>
>> The switches were made by a company in the US called Stackpole
>> ...
>> They are a normal slide type modified with a U bracket to allow the
>> attachment of a lever arm to operate the switch when toggled up and
>> down.
>
> Ah; the 11/05's (which is what I need switches for) use toggle switches (like
> I said, pretty much standard micro toggle switches, excepts for the front
> plate). I'm pretty sure the later 11's with complete front panels (40's,
> 45's, etc) used the same kind of switch.
>
> I was assuming all the PDP-x's of that era used the same front panel switch
> design, but apparently not. Or perhaps I'm mixing my eras a bit, and the
> slightly earlier ones all used the slide switch stuff (I just checked my KA-11
> panel, and it uses slide switches). I think the 11/20 might have used the
> slide switches (its switch register looks just like the one on the -8M).
I think the rocker switches as seen on the KA10 and PDP-12 are slide switches
with a rocker mechanism mounted on top. But the PDP11 switches are mini toggle
switches as far as I remember; the only change is what sort of handle was
slipped over the toggle. Yes, the 11/40 and 11/45, for one; the 11/20 also.
paul
