>
> [We have a project and we are trying to make a pic programmer.We want to
> learn how can we use usb port, how can we connect usb and pic and how we
> can communicate pic and usb?]
> --
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>

There are couple of ways that come to mind. Probably the simplest is to
use a USB to UART bridge like the Silicon Labs CP2102 and similar chips
from Future Technology Devices. The other approach is to use a PIC with
USB hardware on chip. This requires use of the USB firmware provided by
Microchip. Microhip provides some sample code.

I've done USB both ways.

Harold



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