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How Do Computers Work?
They turn electricity and binary into useful computation.
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AiTechWorlds
AiTechWorlds
A computer turns electricity and binary into everything you see on screen. This visual guide explains transistors, binary, the CPU, memory, storage, the fetch-execute cycle, and how hardware and software work together.
They turn electricity and binary into useful computation.
Computers use 0s and 1s to represent everything.
Tiny switches that form the basis of all chips.
Transistors combine into AND, OR, and NOT gates.
A byte is 8 bits and stores one character.
The brain that executes instructions.
More cores and GHz mean more work per second.
Fast temporary storage for running programs.
Keeps data permanently, even when off.
Fetch, decode, execute — repeated billions of times.
The CPU only understands binary instructions.
Compilers turn code into machine instructions.
Connects all components together.
Tiny ultra-fast memory near the CPU.
Handles graphics and parallel work.
Keyboards, screens, and ports connect to you.
Manages hardware so programs can run.
Hardware is physical; software is instructions.
Understanding hardware makes you a better developer.
Electricity → binary → logic → programs you use.
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