first using · Fastest Finger First Mini Project using Microcontoller ( pdf,doc,ppt) fastest, fastest finger first using 89c51 project, project on fastest. I have designed the circuit using microcontroller, which scans the First step is designing the circuit. The microcontroller used in this case is AT89C51, an 8 bit microcontroller manufactured by Atmel (now Microchip). Quiz buzzer circuit operation using microcontroller (AT89C51) and timer for The team that presses the buzzer first is given the first preference for answering a question. buzzer.

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The seven segment displays the number corresponding to the input pressed. Virgin Galactic — Commercial Space Flight.

8 candidate quiz buzzer using 8051 microcontroller (AT89C51)

In the buzzer round of quiz contest, the question is thrown to all the teams. This device is capable of distinguishing between two events with a time gap of microseconds.

By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C51 is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications. As soon fastest-finger-firsst any one of the inputs is pressed, the buzzer sounds for a small duration. On the output side a seven segment is connected to display the corresponding output number.

Fastest Finger First Indicator

This project is an electronic display system that is affordable by the colleges and even individuals. We make no effort to place the Data bus into reverse direction. There are a total of fastest-finger-forst input pins. Design Guides Product Development: The output is displayed on a seven segment display interfaced with microcontrollerwhich shows the number corresponding to the team which has pressed the button first.


Interface SD Card with Arduino. A buzzer is also sounded for a small duration to give an acoustic alarm. Gases like LPG, butane and propane ar In many applications, it is necessary to supply constant dc voltage.

The person who knows the answer hits the buzzer first and then answers the question. For this reason buzzer rounds are avoided for quiz contest held in colleges. It is a fastest-finger-firrst based project which uses a monostable fasstest-finger-first as a timer. Please enter your name here. The combinational circuitry comprising dual 4-input NAND gates of IC3 locks out subsequent entries by producing the appropriate latch-disable signal. Now even if any other input pin is pressed, there will be no effect on the system till the time the stop pin is pressed to reset the system.

Fastest Finger First – Final Year Project ~ Engineering Final Year Projects

Priority encoder IC4 encodes the active-low input condition into the corresponding binary coded decimal BCD number output. The output is displayed on a seven segment display interfaced with microcontrollerwhich shows the number corresponding to the team which has pressed the button first. A resource for professional design engineers. It fastedt-finger-first build around microcontroller AT89C Top 20 Computer Engineering Projects.

Logic 0 state at one of the outputs of IC2 fastest-finger-firrst logic 1 89f51 condition at pin 4 of IC7, there by enabling the audio oscillator. Please enter your comment! Once the trigger is applied, it is not effective for the time period TON, thus not having any control on the output and the output remains high 5V for T ON seconds. Thursday, August 22, The oscillator frequency can be varied with the help of preset VR1.


The quiz buzzer systems are widely used in school, colleges and TV programs. The microcontroller keeps scanning the input pins.

Each switch is given to one team. What is Web Browser. This provides better way to display numbers and avoids conflict with contestant after the end of 15 sec.

It is used for amplification and switching purposes. Accordingly the controller accepts the inputs for TON seconds only and then processes them to give the desired output. Eight pins of port P2 of the microcontroller are corresponding to eight inputs and one stop pin for resetting the buzzer system. Career advice and jobs related fastest-finger-flrst electronics and IOT. Social Facebook Twitter GooglePlus.

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How many days it will take to deliver Manipal,karnaktaka. AT89C51 is an 8-bit microcontroller and belongs to Atmel’s family. Step down transformer is used to step down mains voltage which has Internship — Image Processing Engineer 27 December