Introduction to Computer Architecture and Computing Systems

To write truly efficient code, you need to understand the physical machine that executes it. This text-only course demystifies the inner workings of modern computers, bridging the gap between software development and hardware execution. You will build a solid mental model of computer organization, learning how data flows through the CPU, how memory is managed at the hardware level, and how instructions are processed. By mastering these foundational concepts, you will write better-optimized code and diagnose low-level performance bottlenecks with confidence. In this course, you will: Understand the fundamental components of computer systems, including the CPU, ALU, registers, and system buses; Analyze the differences between CISC and RISC architectures, including modern ISA trends like RISC-V; Master the memory hierarchy, exploring how caches, RAM, and virtual memory interact to prevent bottlenecks; Explore how processors execute instructions through pipelining and parallel processing; Learn how hardware supports modern operating systems through virtualization and input/output interfaces; Apply hardware-aware thinking to write software that aligns with CPU cache lines and memory alignment. The course starts with fundamental binary logic and basic hardware definitions before guiding you through processor design, memory management, and modern hardware-software interfaces. You will learn through clear, text-based explanations and practical hardware-alignment scenarios. This course is designed for aspiring software developers, IT students, and self-taught programmers who want to understand the physical layer of computing. No prior hardware engineering experience is required. Start reading today to unlock a deeper understanding of the hardware that powers your code.