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How to generate clock of frequency 120Khz??

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I am using ICL7135 to make a Voltmeter,
In that i have to provide a clock input to that, so how can i do so, using OP-AMP or by some other simple simple components.
I have to generate clock of 120Khz Frequency, please help me
 

No i dont need an accurate clock.
Is der any circuit usibg simplr components likr op amp transistor capacitor through which i can generate clock of frequency 120khz

pls help i cant use any other ic's for that purpose, pls suggest me something.
 

a 555 timer can also do the job i think 120k can be generated through it.. if it can nothing else would be more easier & cheaper
 

arunsharma0731 said:
I am using ICL7135 to make a Voltmeter,
In that i have to provide a clock input to that, so how can i do so, using OP-AMP or by some other simple simple components.
I have to generate clock of 120Khz Frequency, please help me
Click to expand...

I have used the 74HC04 version
 

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Using a 4093 you can make a simple oscillator.
 

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  • 120k_osc.gif
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How about using a simple 8 pin pic? Perhaps a 12F629/675?

You'd get your 120khz with zero other components, besides the pic itself!

Regards.
 

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