How Processors Work: A Complete Guide to CPUs in 2025
The Core Architecture: Beyond Transistors Modern processors in 2025 are built on extreme ultraviolet (EUV) lithography at 2-nanometer and 1.4-nanometer nodes. A CPU is a complex integrated circuit containing billions of transistors—microscopic switches that toggle between on (1) and off (0) states. The fundamental building block is the CMOS (Complementary Metal-Oxide-Semiconductor) transistor, which uses a … Read more