This allows regions of the transistor that normally insulate to conduct (or vice versa). All transistors rely on this property, but different types of transistor harness it through different means.

Analysts and researchers call the transistor the most important invention of the 20th century on the event of its 60th birthday.

What is a transistor and how do the hundreds of millions of them work on a processor not much larger than a postage stamp? Meet Haf the little frog who learns about a big change in technology.