On 16 December 1947 in the American Bell laboratories the first Transistor was born: the discovery that changed forever technology and user device world.
This small device is able in fact to transmit the binary (0 / 1) information whose principle is diffused today into computers, mobile phones or just radio television sets and generic electronic tools.

Brattain, Shockley e Bardeen were the three engineers who, thanks to notions dating back to the XX century, solved the physical and technologic problems linked to this approach (that entered the market substituting the alternative bulky 'gas pipes' system).

Six years later the acoustic Sonotone 1010: the first electronic device based on a transistor. The first radio entered the market at a price of 50 dollars replacing the old 'gas pipe' version; in 1983 the first mobile phone was born, based on the same principle.

For 60 years the transistor has never changed, based on a silicon, germanium and plastic core. The miniaturization has instead progressed a lot creating devices is some square centimetres.

In 1965 the founder of the future Intel company enunciated the 'Moore rule': the number of transistors in a single processor would have doubled each year. This principle is still valid as today.