Chess computer and fitness tracker: what they have in common

1. Step 1. Chess computer — is a kind of — Supercomputer. Deep Blue was an IBM supercomputer.
2. Step 2. Supercomputer — has part — Graphics processing unit. Modern supercomputers run on GPUs.
3. Step 3. Graphics processing unit — is part of — System on a chip (SoC). A graphics core.
4. Step 4. System on a chip (SoC) — is part of — Smartwatch. Inside is a system on a chip.
5. Step 5. Smartwatch — evolved from — Fitness tracker. Tracker functions moved into watches.

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