On Oct. 3, 1950, three scientists at Bell Labs in New Jersey received a U.S. patent for what would become one of the most important inventions of the 20th century — the transistor. John Bardeen, ...

A bioelectronic engineer, Klas Tybrandt of Linkoping University in Sweden, has built the first "ion transistor" computer chip, which uses chemical ions and biological molecules as charge carriers ...

In this lesson, students build two circuits and explore how transistors function. When Bell Labs introduced the transistor in June of 1948, a spokesman proudly announced "This cylindrical object . . .