Description: Design a quiz buzzer, but at the same time for the eight players or eight teams in the competition, their Numbers are respectively 0, 1, 2, 3, 4, 5, 6, 7, each with a vies to answer first button, button Numbers correspond to contestant's serial number, So, S1, S2, S3, S4, S5 and S6 and S7.
Set a control switch for the show host to control the system's zero (number display digital tube extinguishing light) and the start of the buzzer.
The answering device has the function of data lock and display. After the start of the buzzer, if a contestant pushes the button, the number is immediately locked and the player's number is displayed on the LED digital tube, and the buzzer gives the audio cue. In addition, to block the input circuit, other players are prohibited. The number of priority responder has been kept until the host has zero system.
Extension • extension
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