Wednesday, June 30, 2010

scoring board circuit

Just a minute scoring board circuit diagram
Just a minute scoring board circuit
You can use this circuit for quiz contests wherein any participant who presses his button (switch) before the other contestants, gets the first chance to answer a question. The circuit given here permits up to eight contestants with each one allotted a distinct number (1 to 8). The display will show the number of the contestant pressing his button before the others. Simultaneously, a buzzer will also sound.