what is "Function point"?

what is "Function point"? and
how do we calculate function points?

FP is used to calculate the size of a project.

I am not much aware of function point, but a function point is a unit of measurement to express the amount of business functionality an information system provides to a user.

Hi,

Please refer to the below link to know more about functional point...

[url=http://en.wikipedia.org/wiki/Function_points]Function point - Wikipedia, the free encyclopedia[/url]

Regards,
Narin Kamuni