Just think about when your computer locks up and the Caps-lock key doesn't
light anymore :) That should be a clear indication that something from
the CPU side is controlling it. I think all keyboards have an 8051
microcontroller in them, I had initially thought that it did all the
processing of the keyboard completely, but now I think it is probably
used for key scanning with all the controllable ports on the 8051.
Rick
> Certainly on AT (and I think PS2) keybaords the LED is controlled by the
> CPU. It was a standard way to find out if the kernel had died.
>
> - Steve
>
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