How a computer works: CPU, RAM, disk

A computer is a team of specialists: the CPU computes billions of operations per second, RAM is the desk holding open data, SSD/HDD the cabinet storing forever, GPU the painter for images and AI, the motherboard the roads between them. Open a browser — it rides from disk into RAM.

• ●8 bits = 1 byte; 1024 bytes = 1 KB; a gigabyte ≈ a movie
• ●RAM wipes at shutdown — the disk remembers
• ●The phone CPU beats the Apollo 11 computer