Phonograph and industrial robot: what they have in common

1. Step 1. Phonograph — has part — Diaphragm. A diaphragm with a needle.
2. Step 2. Diaphragm — is part of — Drum. A diaphragm.
3. Step 3. Drum — works like — Drum machine. An electronic drum.
4. Step 4. Drum machine — has part — Microprocessor. A processor sets the rhythm.
5. Step 5. Microprocessor — is part of — Industrial robot. A microprocessor-based controller is in charge.

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