Mini Project

Department of Electronics And Communication

March 2010

Sarabhai Institute Of Science And Technology

ELECTRONIC JAMELECTRONIC JAM

• Amal B• Ajesh S.V• Vivek S.M• Varun G• Praveen P.V

fastest finger first

Sincere Thanks to…Sincere Thanks to…

•Prof: Ravi Nambiar [HOD EC Dept]

•Prof: V.R.P.Varier [Asst HOD EC Dept]

•Deepa V.T [Project Coordinator]

•Sreena V.J [Project Coordinator]

•Vinod Kumar B.G

CONTENTS

• OBJECTIVE• INTRODUCTION• BLOCK DIAGRAM• CIRCUIT DIAGRAM• WORKING• APPLICATIONS• ADVANTAGES & DISADVANTAGES• FUTURESCOPE• CONCLUSION• BIBILOGRAPHY

OBJECTIVE

• Familiarisation & Implementation Of Electronic Jam

INTRODUCTION

• Electronic Jam Is Commonly Used In Quiz Contests• Fastest Finger First Is The Basic Principle• It Adds Beauty To Active Quiz Shows Contains Many

Buzzer Rounds• 8 Inputs Can Be Handle At A Time• Uses Seven Segment Display Instead of LED/bulb

For Visual Interface• This Electronic Jam Is Built With The View Of Making

The Game Show Priority Less

BLOCK Diagram

BLOCK DIAGRAM

BLOCK DESCRIPTION

• Uses IC 7805

Power Supply

BLOCK DESCRIPTION

Edge triggerd Flip flops

• IC 7430

• IC 74373• Eight Latches • 3-state Outputs

• Hysteresis on Latch Enable

8 line to 3 line encoder

8 Input NAND Gate

• IC 74147

• IC 74147

8 Input NAND Gate

Contd..

BLOCK DESCRIPTION

Contd..Contd..

• Works in 6-12 v range

• IC 7404

BCD to seven Segment Decoder

Buzzer

• IC 7447

• Visual Interface

Seven Segment display

Hex Inverting gate

CIRCUIT DIAGRAM

CIRCUIT diagram

WORKING

• 8 Input is fed to edge triggerd flip flop

APPLICATIONS

• It can be used in quiz contests Game Show Priority Less

• It can also be used in voting machines where, if a voter presses a button the LED lamp glows & the buzzer rings. Once a button is pressed all the other buttons are jammed. The officer has a switch to reset the voting machine after each voter votes.

ADVANTAGES

• Handy device• Low power consumption• More accurate• Easy to use• Visual interface adds its advantage

DIS ADVANTAGES

• Input is limited to Eight

Future Scope

• Instead of Seven Segment display LCD screens can be implemented

• Priority list of all inputs can be imparted in output

CONCLUSION

• Project Aims the Implemenatation of ‘Electonic Jam’ for making Quiz shows priority Less

• Seven Segment display included for more User Interface

BIBILOGRAPHY

Web logs:• Wikipedia.org• Electronicsforu.com • Alldatasheets.com• Fairchildsemi.com