Our world today-from the phone in your pocket to the car that you drive, the allure of social media to the strategy of the Pentagon-has been shaped irrevocably by the technology of silicon transistors. Year after year, for half a century, these tiny switches have enabled ever-more startling capabilities. Their incredible proliferation has altered the course of human history as dramatically as any political or social revolution. At the heart of it all has been one quiet Californian: Gordon Moore.

At Fairchild Semiconductor, his seminal Silicon Valley startup, Moore-a young chemist turned electronics entrepreneur-had the defining insight: silicon transistors, and microchips made of them, could make electronics profoundly cheap and immensely powerful. Microchips could double in power, then redouble again in clockwork fashion. History has borne out this insight, which we now call “Moore's Law”, and Moore himself, having recognized it, worked endlessly to realize his vision. With Moore's t