Code: The Hidden Language of Computer Hardware and Software
In this groundbreaking classic — now fully revised and updated — Charles Petzold demystifies computers by tracing the hidden language that underlies all digital technology. Starting from flashlights and Morse code, he builds up through relays, logic gates, and binary arithmetic to explain how CPUs, memory, and operating systems actually work from first principles. An essential read for anyone who wants to truly understand how computers work.