Fastest finger first project

[Nawzad Hussain]

need a project named fastest finger first using any microcontroller

or please guide me in detail how can it be build

thanks

[dagakshay]

 here i an writing the algo which might help you out…

*the switches are connected to a port of microcontroller(lets say PORTA)..

*the port A is externally conncted to the pullup array…

* as soon you press any key that particluar pin of portA goes low

 

code algo:

1) while(PORT A = = oxff);

2) if (PINA.0 = = 0)   output user1

 elseif (PINA.1 = = 0)   output user2

 elseif (PINA.2 = = 0)   output user3

 elseif (PINA.3 = = 0)   output user4

 elseif (PINA.4 = = 0)   output user5

 elseif (PINA.5 = = 0)   output user6

 elseif (PINA.6 = = 0)   output user7

 elseif (PINA.7 = = 0)   output user8

else goto step(1);

3) goto step 1;

 

 

 

 

[Sanket Madhavi]

hi,

can i do fastest finger first using logic gates or using 7475 flipflop

 

 

 

[RAHUL KUMAR TIWARI]

sir programing is wrong 

plz send me program 

using at89c51 ic 

show me on circuit 2 nd 3

[Ganesh Selvaraj]

Here it is: http://www.engineersgarage.com/contribution/expert/fastest-finger-first-circuit-using-atmega-16

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