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.

Author: Tujas Yogrel
Country: Denmark
Language: English (Spanish)
Genre: Literature
Published (Last): 24 March 2007
Pages: 465
PDF File Size: 7.87 Mb
ePub File Size: 2.22 Mb
ISBN: 278-5-47785-963-7
Downloads: 87630
Price: Free* [*Free Regsitration Required]
Uploader: Zulkigor

This high-density System-in-Package SiP integrates controller, power switches, and support components.

Science, Electronic, Electrical, Mechanical Projects Models Reports

The fastest-finger–first is displayed on a seven segment display interfaced with microcontrollerwhich shows the number corresponding to the team which has pressed the button first. I need a PCB layout of fastest finger first indicator without microcontroller. The team which presses the buzzer earliest is entitled to give the answer.

Tuesday, January 1, Sidebar One This blogs is an effort to club the scattered information about engineering available in the web. Choosing Motor For Robots.

Fastest Finger First | Full Circuit Diagram With Explanation

More interesting projects available here. It has flash memory.

The conversion of ac to tastest-finger-first is achieved by rectifier supplied with ac signal using fastesst-finger-first down transformer. Filter capacitor is used for removing ripples present at the output of bridge rectifier. The seven segment displays the number corresponding to the input pressed. In TV shows, where the whole event is recorded, the actions are replayed in slow motion to detect the first hit. When the system starts, the seven segment does not displays any output.


The output is displayed on a 16×2 liquid crystal display LCD.

By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C51 fastest-fingsr-first a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications.

This Code is only visible to Registered users.

8 candidate quiz buzzer using 8051 microcontroller (AT89C51)

A seven segment display is the most basic electronic display device that can display digits from fastesst-finger-first This quiz buzzer can be used for a maximum of eight teams.

Step down transformer is used to step down mains voltage which has This quiz buzzer can be used for a maximum of eight teams.

Project Engineer 22 December There is a wide range of cheap low-voltage motors available, run The oscillator frequency can be varied with the help of preset VR1. Mono – stable Multi – vibrator Using timer IC — Each switch is given to one team. This project deals with the control circuit for the switched mode power supply and is a combination of a microcontroller and a FPGA.

Please enter your name here. Monostable multivibrator acts as a timer.

Fastest Finger First Indicator

Awesome Timer IC Projects. Door Sensor 19 December This project is an electronic display system that is affordable by the colleges and even individuals.

This provides better way to display numbers and avoids conflict with contestant after the end of 15 sec. You have entered an incorrect email address!


The quiz buzzer presented here takes care of the aforesaid problem. Career advice and jobs related to electronics and IOT. Eight pins of port P1 of the microcontroller are corresponding to eight inputs and one stop pin for resetting the buzzer system. The piezo buzzer produces sound based on reverse of the piezoelectric effect.

Priority encoder IC4 encodes the active-low input condition into the corresponding binary coded decimal BCD number output. This quiz buzzer system has eight input pins corresponding to eight teams. Basics, Usage, Parameters and Applications.

Quiz-type game shows are increasingly becoming fxstest-finger-first on television these days. A buzzer is also sounded for a small duration to give an acoustic alarm. Accordingly the controller accepts the inputs for TON seconds only and then processes them to give the desired output. The system uses 89C51 microcontroller for controlling all the activities. What is Web Browser. Design Guides Product Development: Diodes 1N form the bridge rectifier. In such cases the decision can be biased fastest-finegr-first to human intervention.

The IC78XX series of 3 terminal regulators are available with fixed positive voltages. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

Monostable multivibrator and inverter.