Economic historian Chris Miller explains how the semiconductor came to play a critical role in modern life and how the U.S. become dominant in chip design and manufacturing and applied this technology to military systems. America's victory in the Cold War and its global military dominance stems from its ability to harness computing power more effectively than any other power. But here, too, China is catching up, with its chip-building ambitions and military modernization going hand in hand. America has let key components of the chip-building process slip out of its grasp, contributing not only to a worldwide chip shortage but also a new Cold War with a superpower adversary that is desperate to bridge the gap.