Hey Friend..
I have got a problem..
i am doing my project.. so i have to make tha Quiz Circuit which is like this

The Desription of project is given here..
http://www.zen22142.zen.co.uk/Circuits/Misc/quiz.htm

When i simulated the circuit on Multisim
The Output was not as i wanted..
plz help mee

Regards
Waitng 4 reply....

 

Can you say what you need to make?

The Output was not as i wanted..

This is not very informative.

 

The Output was not as i wanted..

What output did you want?

 

oOoOppSss.... i 4gOT... :S

The OutPut i wAnt is wHeN Key A is Pressed The Corresponding Led Glows and all the other switches are at logic 0.

then By pressing reset all come to logic 0. hope now you got the idea

 

Try replacing the 1k resistances at the leds with 100Ω and tell us if there's a difference.

 

nO eFfEct Lolx

 

Hello,

Did you tie the unused inouts of the 4082 to 0V as stated in the picture?
Did you mount decoupling capacitors at each IC?
See this thread for more info:
http://forum.allaboutcircuits.com/showthread.php?t=45583

Bertus

PS stop playing with the caps-key, this makes the raeding more difficult.

 

Typically the untied inputs shouldn't be a problem. The datasheet says the Reset and Clear are independant of the clock, but can't be too carefull.

It might sound trivial to most of us, but did you add a digital voltage source somewhere in your workspace? Those IC's don't run on thin air...

 

What is your Vcc?

If your Vcc is 5V, make the resistor in series with the diodes 180 ohms.

The circuit as drawn will simulate. If your Vcc is too low, the LEDs won't energize in the simulation.

 

I arleady recommended 100Ω and the OP said it didn't help.

 

Maybe the OP can do some voltage tests and say if the Q output changes when pressing the "A" button.

Or better yet ... do a print screen of his multisim screen so we can see how they wired it.