From the first wooden counting machine to the pocket-size devices many people carry today, delve into the history of computers with the 12 Biggest Breakthroughs in Computer Technology. Each chapter focuses on the development of an instrumental piece of technology, connecting inventions that have led to life today. Fascinating historical and modern photos with intriguing layouts and design features support the text. Thoughtful sidebars, "Think About It" prompts, and numbers-based quick facts will get readers' gears turning. An in-depth fact sheet, glossary, and suggestions for further learning make this book a complete learning experience.