★ Author William Lee Mapp III is a seasoned computer expert who, with his witty style, demystifies the core principles of computing—from abacuses to AI—without a single obscure technical term, making “how digital devices work” easy to grasp for both beginners and advanced users.
★ This book is designed to help readers quickly re‑understand computers in a technology‑driven world. Divided into seven chapters, it focuses on key components such as hardware, software, AI, and quantum computing, tracing the journey from humanity’s earliest desire to count to the cutting edge of science. Offering both a fresh perspective on how computers function and an engaging, accessible popular science experience, it serves as an essential beginner + advanced guide for tech enthusiasts.

Have you ever glanced down at your phone and wondered, “What’s really going on inside?” If you’ve ever been curious about how modern computers and digital devices work, this book will take you on an engaging, educational journey into humanity’s enduring quest to count, compare, and compute.
Divided into seven accessible chapters, it breaks down computer technology into its most fundamental building blocks, with each chapter focusing on a different aspect of the machine. Employing vivid analogies—such as comparing a computer’s central processor to the human brain—the author makes even complex ideas easy to grasp. Whether you’re a beginner or an advanced user, you’ll be guided from the earliest stirrings of computing all the way to today’s cutting-edge algorithms and artificial intelligence. With a witty, conversational tone and without resorting to jargon, the book demystifies how computers, algorithms, and AI actually work, inviting readers on a lighthearted, entertaining, and deeply rewarding exploration of technology.

William Lee Mapp III
William Lee Mapp III currently serves as Chief Technology Officer at the healthcare technology company Qlarant. A lifelong computer enthusiast, he is a seasoned engineer, inventor, and executive, holding numerous trademarks, copyrights, and patents. The software and systems he has designed are in operation across more than 23 countries, and his technological solutions have benefited over one billion people worldwide.
His technical career began at NASA, after which he went on to build teams and develop solutions for many of America’s leading technology and consulting firms, including IBM and Lockheed Martin. In 2006, he founded his first technology company, BA Systems, and played a pivotal role in building the data-processing system for the 2010 U.S. Census. As president of BA Systems, Will led the company into the emerging RFID market; he helped design the world’s first RFID bookshelf and built a nationwide regulatory‑compliance chain system for McKesson, which later earned an award from Diversity Business magazine.
After leaving BA Systems, Will founded Studio Codeworks, returning to the mobile and big‑data processing spaces. Under his leadership, Studio Codeworks entered the video‑game market, releasing the award‑winning title DibDibs. The studio’s engineering talent also made significant contributions in less visible domains, such as tracking and safeguarding the assets of the 500‑acre U.S. Capitol complex, as well as sterilizing bacteria and biological agents for Pfizer. Under Will’s stewardship, Studio Codeworks received commendations from the Governor of Maryland, multiple awards from the Maryland State Senate, and recognitions from Senators Barbara Mikulski and Ben Cardin.
Currently, he focuses on product ownership, solution architecture, system design, software engineering, DevSecOps, game systems, learning models, and artificial intelligence. He has been active in programming since the age of seven.
Over the years, he has served as a radio host, a technology analyst, and a podcast guest, and is the author of The Small Business Owner’s Tech Guide and Trans Graffiti.

Preface
Special Acknowledgments
Foreword

Chapter 1: From Beads to Binary
Once upon a time—numbers already existed
Computing technology is very old, truly ancient
The Abacus: An Early “Computer”
Pascal’s Calculator
1 and 0 Changed Everything
Chapter Summary

Chapter 2: The Body (Computer Hardware)
We No Longer Use Beads
The Anatomy of the Computer (Its Structure)
Recent Developments
Chapter Summary

Chapter 3: The Soul
Learning a Foreign Language
The Computer Translator
The Connection Between Humans and Machines
Chapter Summary

Chapter 4: Programs
Problem Solving
Operations and Functions
Logic
Algorithms
Engineers, Developers, Coders
Programmers and Developers
Chapter Summary

Chapter 5: Flow
Looking Back
Files
Ports
The Network
Telephones
Chapter Summary

Chapter 6: Learning Machines
The Cloud
Artificial Intelligence
How Does It Work?
Deep Learning
How We Use Deep Learning
GPT and Large Language Models
Chapter Summary

Chapter 7: Quantum and the Future
Everyone Is a Programmer
Automation Will Test Our Economy
Income Inequality Gives Rise to Technological Inequality
Close Connections
Predicting the Future
Chapter Summary

References