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PROJECT DESCRIPTION

The main concept of this project is to develop a fastest-finger-first quiz buzzer which can be used to know the person who pressed the buzzer fast of all among a group of people.

The proposed system uses a D-flip-flop and a rectified power supply. In this system, 8-push button switches are interfaced to the circuit to provide input signals. A string of LEDs and piezo buzzer are connected to the circuit with the help of a transistor to give indication.

A Quiz buzzer allows any user to press the switch to generate a logic signal, which is fed to the D-flip-flop. The flip-flop generates a corresponding O/P signal to trigger the transistor. The transistor activates the piezo buzzer to give an alert along with the indication of the switch pressed with the LEDs. Even if many switches are pressed at the same time, the D-flip flap – working as a priority encoder – takes into account the first switch pressed, for consideration.

This project in future can be implemented by using a display to indicate the order in which the switches were pressed.

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The main concept of this project is to develop a fastest-finger-first quiz buzzer which can be used to know the person who pressed the buzzer fast of all among a group of people.

The proposed system uses a D-flip-flop and a rectified power supply. In this system, 8-push button switches are interfaced to the circuit to provide input signals. A string of LEDs and piezo buzzer are connected to the circuit with the help of a transistor to give indication.

A Quiz buzzer allows any user to press the switch to generate a logic signal, which is fed to the D-flip-flop. The flip-flop generates a corresponding O/P signal to trigger the transistor. The transistor activates the piezo buzzer to give an alert along with the indication of the switch pressed with the LEDs. Even if many switches are pressed at the same time, the D-flip flap – working as a priority encoder – takes into account the first switch pressed, for consideration.

This project in future can be implemented by using a display to indicate the order in which the switches were pressed.

PROJECT HIGHLIGHTS
Fastest Finger First useful in Games.
Non-Microcontroller Project.
Call/mail for Tech Support from 10 am - 7 pm IST.
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
×
Fastest Finger First useful in Games.
Non-Microcontroller Project.
Call/mail for Tech Support from 10 am - 7 pm IST.
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
BLOCK DIAGRAM
Hardware Requirements
  • Transformer
  • Diodes
  • Capacitors
  • Resistors
  • LED’S
  • D flip flop
  • LEDs
  • Transistor
  • Push Button
  • Buzzer
×
  • Transformer
  • Diodes
  • Capacitors
  • Resistors
  • LED’S
  • D flip flop
  • LEDs
  • Transistor
  • Push Button
  • Buzzer
Q & A
Q:  Where is this project used?
A:  This project can be implemented at schools, colleges, where quiz competitions are held.
Q:  How many switches are provided with this project?
A:  About 8 switches are provided with this project, along with 8 LEDs.
Q:  Which microcontroller is used in this project?
A:  No microcontroller is used is in this project.
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