[moved] A 60 Seconds Stop Watch

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goygfamily

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hi everyone, I was required to build a stop watch that would count up to 60 and then go back to 0 and start counting again. Also i had to make 2 switches one for the start/stop button another for the reset button. I have completed both the mod 60 and the start and stop button and it is working in multisim. I cant seem to get the reset button to work, when activated it is suppose to clear the counter to 00 and stay there till the start/stop button is activated. I used a mod 10 and mod 6 counter to make the mod 60 counter and also the start/stop switch and the clock is put into the and gate and connected to the clock of the 7493 to make the start/stop switch. thanks
 

Sounds like your reset button should also work as a stop button. Please post your schematic so we can suggest how it can be modified.

Brian.
 

Do we need to assume ourselves that you have used 555 timer ic in astable mode and you have used BCD counter and the 7 segment display to display the timervalue?
 

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