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

 

[E-design]

If your frequency needs to be accurate, you can use a 4060 together with a crystal which will be 2^n x 120k (example 7.68MHz = 2^6 x 120k)

http://www.astrosurf.com/spectrohelio/images/oscillateur.gif

 

[xpress_embedo]

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.

 

[thylacine1975]

You can't go past the good ol' transistor astable multivibrator for simplicity
It's described nicely here: https://www.electronics-tutorials.ws/waveforms/astable.html

 

[Ow@i$]

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

 

[alexan_e]

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

I have used the 74HC04 version

 

[E-design]

Using a 4093 you can make a simple oscillator.

 

[ard]

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.