Windows System Programming

A must-take course for anyone thinking of becoming a Windows programmer! Have you studied C/C+, data structures, and operating system theory? If so, studying system programming is the answer now. Now it's time for practice!

QML for Qt UI development, we will explain in detail from introduction to practice.

This course will guide you through the complexities of the Linux operating system, from a strong understanding of the Linux kernel to invoking system calls, process management, and file operations. You will also learn threading and interprocess communication techniques.

Are you curious about how programs run, multiple tasks are processed simultaneously, and data is stored securely? Through 13 lessons, you will systematically learn the core principles of operating systems, including processes and CPU scheduling, memory management, threads and synchronization, and file systems. By connecting concepts you may have previously memorized individually, you can understand how computer systems operate and build a solid foundation of knowledge essential for development.

This course covers the fundamental concepts of operating systems, one of the core subjects in computer science. Operating systems are essential software for efficient resource management and providing user environments in computer systems, and through this course, learners can systematically understand how operating systems work and what components they consist of. Additionally, by learning the structures and functions of various operating systems, students will master the detailed operating principles of operating systems such as processes, memory management, file systems, and disk management, and can solidly build the foundational knowledge necessary for actual development and system utilization. Through this course, learners will gain a comprehensive understanding of operating systems and will be able to have confidence in advanced computer science learning and practical applications.

Many people use Docker, but few understand its underlying principles. Without understanding these principles, you can only rely on searching for answers when problems arise, rather than solving them yourself. The essence of Docker lies in the operating system. This course is not a superficial overview of memorizing a few commands; it delves deep into the inner workings of the operating system that makes up Docker. Once the internal structure becomes visible, Docker is no longer difficult.

This course covers the core of TCP/IP network programming required for online game development, with a practical, hands-on focus. You will learn step by step, starting with the basic principles of sockets and progressing through client-server architecture design to implementing a game framework using a self-developed network library. Topics covered: Basic network concepts and how TCP/IP works TCP programming using the Socket API Packet protocol design and implementation of transmission structures Development of a client/server-based game framework Optimization and practical tips needed for actual online game development Notes: The course is conducted on Windows using Visual Studio. Although it uses the standard bsd socket API, there are slight differences from Unix-based operating systems. IOCP and Overlapped I/O are not covered.

Simply learning C++ is not enough. You can truly see C++ only when you understand "why these syntax rules were created." This course is not just a list of simple syntax. A Microsoft MVP with 30 years of experience and the author of "Do it! Introduction to C Language" explains the structure and philosophy of C++ in depth from the perspective of a language designer. As a result, you will experience a shift in your developer mindset that goes beyond just "friendly explanations."

This course is provided for those who have completed the 'Becoming a CS Major by Memorizing Broadly and Shallowly' course to study operating systems in greater depth.

Are you having trouble using CMake? After taking this course, you too will be a CMake expert.

The author of "Learning the Structure and Principles of the Linux Kernel Through Debugging" provides a thorough explanation of the core interrupt concepts of the latest Linux kernel (v6.1), which are most widely used in system software.

This course puts an end to operational vulnerabilities in Linux servers caused by incorrect permissions. Completely master file and directory permission control based on real-world practical standards.

A course where you understand core operating system concepts and train to explain them verbally for interviews.

Now I can analyze the Linux kernel too! The easiest kernel lecture among all Linux kernel courses.

This is the process of refactoring a game engine made with C++ using the DirectX 11 library. It was developed by inferring internal code, allowing you to think about the internal principles of the Unity engine. This is not a project at the level of a rendering program typically covered in academies/lectures. It builds a real game engine incorporating various technologies, from the build system and scripting.

This is Part 1 of a roadmap course that neatly organizes, in a short amount of time, the essential computer science (CS) knowledge you need to excel at development and data. This course has also been used for years as an in-house course at top companies in Korea. Based on 20 years of experience in the field, ranging from systems software to web and app development and data science, this course systematically and thoroughly covers the core concepts you need to excel at development and data—while keeping them easy to understand.

GPGPU is no longer an unfamiliar technology. It has long been utilized in various fields such as scientific computation, simulation, and graphics processing, and today, it has established itself as the core foundation that determines the performance of AI technology. In this context, GPU programming skills serve as a powerful tool that expands a developer's capabilities to the next level. Moving beyond CPU-centric development to directly handling large-scale parallel computing means acquiring a new way of problem-solving and broader development possibilities. This course systematically covers CUDA programming—the de facto standard of GPGPU—from the basics to practical application. The curriculum focuses on content that can be immediately applied in practice, including understanding GPU architecture, parallel programming models, memory optimization, and kernel writing. The goal is to reach a level where you can design and implement GPU-based programs on your own after completing the course.

The author of "Learning the Structure and Principles of the Linux Kernel Through Debugging" provides a proper explanation of the core concepts of 'Interrupt Bottom Halves' in the latest Linux kernel (v6.1), which is most widely used in system software.

This is the process of creating a game engine using C++, similar to the Unity game engine. It was created by inferring the internal code, and through this, we can think about the internal principles of the Unity engine.

Have you learned C++ and Java separately but felt confused about why they were designed differently? This course compares both languages simultaneously, helping you fully understand object-oriented structure, memory, and operational principles. Beyond simple syntax, you will gain a deep understanding through hands-on practice of: ✔ Compilation structures ✔ Memory model differences ✔ Internal workings of inheritance and polymorphism ✔ Virtual tables and JVM architecture Additionally, we provide a 'Python-based code comparison auto-generator tool' to help you visually understand the conversion structure between C++ and Java. We will elevate your skills from simply "using" object-oriented programming to a level where you can "design and explain" it.