hi!
Thanks for replying. Actually i was interested for some think which take for example 1 square wave pulse and produce acurate 1 sine wave waveform.
Also I was thinking of using any pin of 89C51 as sqaure wave output and i want to be able to use it for as high frequency as possible and produce sine wave from it.
Actually i need this type of circuit to make some testing tools for analog circuits.
Thanks!