[u-u] Keyboards...

[Ross Ridge]

David Gilbert writes:
|  On the "multiple
| keys" thing ... I think I number is between 8 and 10... but they also
| have between 6 and 18 (maybe as many as 24?) programmable keys.

D. Hugh Redelmeier writes:
> Well, you aren't using USB then.  USB maxes out at 6 key rollover.

It's a bit more complicated than that, USB keyboards using the HID
"boot protocol" are limited to reporting 6 pressed keys plus modifiers
like Shift and Alt.  USB keyboards can however can also use the normal
HID report protocol to define their own report format which can have as
many keys as they want in it.  However almost all keyboards only support
the boot protocol, even most gaming keyboards.