quizz buzzer

[leecar23]

hello
I am trying to make a quiz buzzer system with my scouts. I want it for two teams of four with lights and sound indicators like door bell/buzzer, the problem i have is how to break the circuit to show the first person to buzz and then reset for the next round? could any body help.

 

[svbz]

quiz buzzer schematics

Try these:

http://www.electronicsforu.com/elec...01_May06.pdf&title=School/College Quiz Buzzer
http://www.svbz.com/schematic.html

Have fun!