Click into the board, the peripherals and the software stack to see how each part earns its place in a computer system — then test yourself in Quiz Mode.
Select a component on the board to see its purpose, features and the factors that affect how it's chosen.
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Input devices
Output devices
Storage devices
Pick a device to see how it's used and what affects the choice of hardware in a real system — user needs, cost, compatibility, efficiency and security.
The stack runs bottom to top: hardware is controlled by the kernel, which the rest of the operating system and software rely on.
Select a layer of the software stack, from the kernel up to application software, to see what it's responsible for.