i have downloaded pic9000 oscilloscope on my laptop and i want to connect my circuit which is on a breadboard .how to interface my breadboard to pc now!

 

Wait-a-second. Are you talking about PicoScope 9000 ?

If so, you need the PicoScope. It is an external device used to attach the probes to the PC's USB port.

You need this:

 

i think it cost in some thousands in india. cant i connect breadboard without any hardware to my computer?

 

Not with that software.

You should try the poor mans oscilloscope. That will allow you to connect your probe into the soundcard.