Buzzer System Construction

TO:QUIZBOWLERS
FROM:RB

I'm sorry if this has been asked here before; I'm a relatively new member of 
the list.

Does anyone out there have, or know where I could get, information on how to 
build my own quizbowl-style lockout/buzzer system?  It seems so simple, and 
I'm on a budget, but my knowledge of electricity and such just doesn't 
extend that far.  Any free information is, therefore, of course, best, but 
if you know of a book that could be bought or checked out from the local 
library, that would be most helpful as well.  Thanks very much!

Keeblin',
RB

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