Mohamed M. Atalla's surface passivation process, developed at Bell in 1957, led to the planar process and planar transistor developed by Jean Hoerni at Fairchild Semiconductor in 1959, from which comes the origins of Moore's law, and the invention of the MOSFET (metal–oxide–silicon field-effect transistor, or MOS transistor) by Mohamed Atalla and Dawon Kahng at Bell in 1959. The MOSFET was the first truly compact transistor that could be miniaturised and mass-produced for a wide range of uses, enabling Moore's law and revolutionizing the electronics industry. It has since been the building block of modern digital electronics, and the "workhorse" of the electronics industry.