Learn 51 Microcontroller Step by Step - C Language Version (3rd Edition)
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Foreword
Why write a book like this?
Microcontroller technology is a mainstream technology in modern industrial automation, electrical and electronic engineering, communications, and the Internet of Things. As people's lives and production methods become increasingly automated and intelligent, microcontroller technology has long been integrated into every corner of our lives. Almost all household appliances contain microcontrollers, and countless automated and intelligent public facilities rely on microcontrollers working diligently behind the scenes. At the same time, microcontroller technology is also a foundation for learning more advanced technologies such as embedded systems and FPGA design.
Many students aspire to master microcontroller technology, having read numerous books and invested considerable effort, yet often feel only superficially knowledgeable. When faced with specific projects, they feel lost and unsure where to begin. While there are many books on microcontroller development available, some are overly theoretical, focusing solely on architecture and assembly instructions, leaving students still unsure of what a microcontroller is. Others offer only simple experiments, limiting students to basic tasks like lighting an LED or displaying numbers, without utilizing C language pointers or providing comprehensive practical examples. These textbooks fail to provide in-depth learning and hinder the connection to real-world project development, potentially leading to self-doubt and questioning whether microcontrollers are right for them.
Based on the author's many years of experience in the field of microcontrollers, microcontrollers are not actually that difficult. They may seem mysterious to laymen, but the main reason they are difficult to learn is because no one helps explain the various intricacies of the subject, and the primary reason for not being able to learn them is the wrong approach and the lack of professional guidance.
For these reasons, we have compiled this book, "Learn 51 Microcontroller Step by Step - C Language Edition" (3rd Edition), which includes accompanying video tutorials, electronic lesson plans, source code, and experimental development boards (for more information, please visit the Kingstreet Studio website www.kingst.org ). This book will guide you step by step to learn microcontroller technology, bringing good news to microcontroller beginners and enabling you to master microcontroller technology step by step.
"Learn 51 Microcontroller Step-by-Step - C Language Edition" (3rd Edition) not only explains simple experiments and programming syntax, and provides a gradual introduction to microcontroller technology and C language programming skills, but more importantly, it combines multiple modules, using the programming rules of actual engineering projects to guide readers step-by-step in learning circuit design and programming thinking in practical development. In particular, its flexible use of C language pointers and structures, multi-module programming of microcontrollers, and guidance on practical project development processes are rare gems among current microcontroller textbooks. A thorough mastery of this textbook will enable readers to quickly adapt to and undertake actual project development after entering the workforce. In short, this textbook builds a bridge for students from beginners to engineers.
Features of this book
1. Practice-oriented, combining theory with practice
At this stage, learning microcontrollers is not about passing exams or writing papers, but about truly mastering microcontroller development technology. Therefore, this book primarily serves as a practical guide. The goal of each chapter is not to have you memorize theoretical knowledge, but to teach you how to actually program. Once you understand the methods, you can put them into practice, thereby achieving the purpose of learning and mastering microcontroller technology.
2. A scientific learning plan, progressing gradually from simple to complex.
Many beginners are unsure how to learn microcontrollers. Don't worry, this book provides a scientific learning method and approach. By following the methods and approaches outlined in the book and practicing as required, you'll quickly learn how to use microcontrollers. This book's learning approach differs significantly from traditional methods. Traditional methods explain the basic principles first, then provide examples. This book, however, prioritizes examples to create vivid images before exploring the underlying principles, explaining the principles behind each knowledge point in the examples one by one. This approach greatly facilitates understanding the examples.
3. Detailed explanations and vivid metaphors
Everything in nature is interconnected, and microcontrollers are no exception. In fact, many principles and theories of microcontroller technology are similar to people's daily lives. During the course, we will try our best to connect difficult technical issues with real-life experiences, using vivid analogies to help everyone thoroughly understand the fundamental principles.
4. Abundant examples, standardized design, and close integration with real-world projects.
Previous textbooks mostly focused on principles, deviating somewhat from practical application development. The author believes that learning technology by getting as close as possible to real-world projects is the key. Therefore, the authors of this book are all engineers with many years of rich experience in real-world project development. All circuit design, programming ideas, and standards are combined with actual project development, so that readers can quickly get started with practical development after getting started.
5. Focus on practical technologies
This book focuses on the application of microcontrollers rather than detailed theoretical explanations. Traditional books typically list and introduce everything related to microcontrollers and C programming, but this book prioritizes frequently used information, provides brief introductions to less common topics, and omits outdated or rarely used content, thus maximizing the book's focus. As one reader described it: "It's all practical information, extremely useful for real-world development."
6. Accompanying video tutorials
In addition to printed books, the publisher uses micro-videos to upload all the video tutorials for the accompanying teaching materials to a cloud server. Readers can watch the teaching videos simply by scanning the QR code on the textbook.
7. A comprehensive technical discussion platform
This book provides access to the technical discussion platform, Golden Beach Studio. Readers can download all the learning videos and documents, and also join the technical discussion group to learn and grow together with others.
Main content
The book comprises 14 chapters. Chapters 1 to 13 use experiments as a vehicle to explain the basics of microcontrollers and C language syntax, gradually delving deeper into the internal resources of microcontrollers and various uses of C language. Interspersed throughout are introductions to circuit design approaches and programming techniques commonly used in practical project development. In explaining the knowledge, some concepts deviate from the traditional approach of introducing and then applying; instead, they are applied first and then analyzed. This method is more conducive to readers' in-depth understanding of the knowledge points and their usage and principles. Chapter 14 is a project development guide, leading readers through the entire process of a practical project development and culminating in its completion, providing a practical exercise before actual project development.
Due to the author's limited expertise, there may be inaccuracies in the book. We sincerely welcome readers' criticism and corrections.
Song Xuesong
November 2025
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