23 Sep
2011
23 Sep
'11
6:20 p.m.
On 23 September 2011 18:41, Chuck Guzis <cclist at sydex.com> wrote:
On 23 Sep 2011 at 18:14, Liam Proven wrote:
And actually, come to that, now I think of it...
I have no clue about the signalling level stuff, but there were also
PS/2 mice; same physical socket, different signalling. Mice wouldn't
work on keyboard ports and keyboards wouldn't work on mouse ports,
until the very end of the lifetime of the standard.
There were never AT-interface mice - so *something* in there is different.
--
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OK, fair call, true, but *in context* there are 3
or maybe 4 PC
keyboard interfaces: PC/AT, PS/2 and USB. As you say, occasionally,
companies have used nonstandard or proprietary connectors, but the
above cover 99.9% of PCs, I reckon.
Exactly (but for the connector) does the PC/AT interface differ from
the PS/2 interface?