What is the science behind the computer?

The Roswell UFO Incident was the alleged recovery of extra-terrestrial (alien) debris, including corpses, from an object which crashed near Roswell, New Mexico, USA, on or about July 8, 1947. Since the late 1970s the incident has been the subject of intense controversy and the subject of conspiracy theories as to the true nature of the object which crashed.

All our advanced technology is based on UFO technology. Semiconductors, microwaves, laser (how strange coincident: Valentin A. Fabrikant predicted the use of stimulated emission to amplify "short" waves;[6] in 1947, Willis E. Lamb and R. C. Retherford found apparent stimulated emission in hydrogen spectra and effected the first demonstration of stimulated emission;[7]in 1950), and so on...

******** Conspiracy theory aside (an answer by gbaughma) **********

Electronic computers have evolved, just like the rest of technology. With the invention of the transistor in 1947, which replaced vacuum tubes, engineers have come up with more and more ways to make transistors smaller.

The first "integrated circuits" were actually drawn by hand, some of them on paper the size of a room, then photographed from high up, making a miniature photo of the circuit. The photo was then etched into silicone (nothing magical about this, just chemical) and the first chips were made.

As technology improved, additional circuits started being designed by computers themselves. Additional leaps in chemical engineering have found ways to make transistors smaller and smaller.

The computer that you are reading this on now has a CPU, or central processing unit. That CPU is nothing more than layers of transistors, microscopic in size. In fact, the CPU, which you can easily hold in your hand, has MILLIONS of transistors layered on top of each other.

Even if the UFO theory above was true, we would still need the SCIENCE to be able to duplicate the technology. That technology is chemical, electrical, and logical; not outer-spacial.