--- In quizbowl_at_yahoogroups.com, cooterchekov <no_reply_at_y...> wrote:
> I don't know much about software, but the external element can be
> pretty simple. This is how I would build it:
> http://home.gwu.edu/~ers/buzz1.png
> That's not a circuit diagram, just an outline sketch. How it works
> is:
> Set up a 555 timer or equivalent to put out a square-wave SYNC
> pulse in the range of about 1 kHz (or faster).
Whoa, this seems like at least an order of magnitude too slow. If I
read this right, this means that there'll be a 15ms delay between
checking the first switch and the last. Given that human reaction
times are, IIRC, in the 20-30ms range, this seems like it could have
a huge impact on the outcome of buzzer races.
--Paul
