Computer Science From Scratch - David Kopec

You know how to write Python. Now master the computer science that makes it work.If you’ve been programming for a while, you may have found yourself wondering about the deeper principles behind the code. How are programming languages implemented? What does an interpreter really do? How does the microprocessor execute instructions at a fundamental level? How does a machine learning algorithm make decisions?Computer Science from Scratch is for experienced Python programmers who want to fill in those gaps—not through abstract lectures, but through carefully designed projects that bring core CS concepts to life. Understanding these fundamental building blocks will make you a more versatile and effective programmer.Each chapter presents a focused, hands-on project that teaches a fundamental idea in computer science:INTERPRETERS: Understand syntax, parsing, and evaluation by writing a BASIC interpreterEMULATORS: Learn computer architecture by building an NES emulator from the ground upGRAPHICS: Explore image manipulation and algorithmic art through computer graphics projectsMACHINE LEARNING: Demystify classification by implementing a simple, readable KNN modelThese projects aren’t about building tools—they’re structured lessons that use code to reveal how computing works. Each chapter concludes with real-world context, thoughtful extensions, and exercises to deepen your understanding.Authored by David Kopec, a computer science professor and author of the popular Classic C
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