transistor-invention

Chapter 13 of James Gleick's "The Information" explores the foundational year 1948 when Claude Shannon published his seminal "A Mathematical Theory of Communication," establishing the bit as a fundamental unit of information. The chapter situates Shannon's work alongside the invention of the transistor, emphasizing the shift from hardware to abstract information theory, and traces the conceptual purification of 'information' into a measurable quantity that underpins modern communication, computation, and biology. It highlights Shannon's unique blend of engineering and mathematics, his influences, and the emergence of information as a central principle across disciplines.

The chapter chronicles the development of early programmable computers during World War II and their critical roles in military applications such as code-breaking, ballistic calculations, and atomic bomb development. It highlights pioneering machines like the British Colossus, the American Harvard Mark I, and ENIAC, emphasizing technological breakthroughs including the invention of the transistor and foundational concepts like the Turing Test. The narrative also addresses the social context, notably the contributions of the ENIAC women programmers, and situates these advances within the broader geopolitical and technological landscape of WWII and the Cold War.