[Rickertsen2]

I'm assuming you mean a basic stamp. A basic stamp is a magical chip made by a company called parallax. Think of it as a black box with inputs and outputs and you can program it to do whatever you want. It is programmed in BASIC. Stamps used to be the heart of the controllers that we used, but the newer model controller uses a PIC instead of a stamp.

Stamps are pretty nifty for hobby projects but are pretty expensive at a price of $20 for the lowest end models all the way up to about $100. PICs by comparison are only a few bucks a piece and are far more powerful.

What stamps have over other microcontrollers is that they are easy. They are programmed in BASIC and need no external circuitry to make them work. If you want to know more about them, there is a wealth of info on the parallax website.