Audiobook Giant brains; or, Machines that think

This work explores the origins and mechanical principles of early computing devices, presenting the historical context of digital technology. The author investigates how machines handle information through electrical circuits, relays, and binary codes, drawing parallels between human thought processes and mechanical calculation. The text details several pioneering machines, including the MIT differential analyzer, Harvard sequence-controlled calculator, ENIAC, and Bell Laboratories relay computer. It breaks down their technical architecture, the role of punch cards, and the use of logical truth tables in machine design. The narrative then expands into the mathematics of logic and the algebra of circuits, illustrating how mechanical switches perform logical reasoning. The closing chapters look toward the future, predicting the rise of automated libraries, translators, and advanced memory systems like magnetic tape and mercury tanks, while considering their broader impact on human society.