Description

1. Why study computer architecture?
Computers are everywhere—phones, cars, games, servers, etc. Software runs on this hardware. Understanding architecture helps programmers know how their programs actually execute and why some programs are faster or use less memory.

2. Importance of architecture
Computer architecture explains the fundamental structure and operation of a computer, especially:

• Processors (CPU) — execute instructions.
• Memory — stores programs and data.
• I/O systems — communicate with external devices.

The book focuses on these areas from a programmer’s point of view, rather than going deeply into hardware engineering.

3. Learning the essentials
The goal is to understand enough hardware concepts to write efficient and correct programs. Important programming-related concepts include binary representation, integer ranges, and two’s-complement arithmetic.