.i mean i wanna to know the hardware schematic for touchpad.
You are still asking the wrong question. Is this something some one has made and you want to make one? If so post a link to it but better get in touch with the author.
Or do you want to know what is inside a touch pad so you can use it for other things.
i wanan replace with programming with an integrated circuit?can it be done by using integrated circuit?
No.