C and electric generator: what they have in common

1. Step 1. C — is used in — Unix. Unix was rewritten in C.
2. Step 2. Unix — evolved from — Time-sharing. It grew out of Multics.
3. Step 3. Time-sharing — uses — Mainframe. Multi-user mainframes.
4. Step 4. Mainframe — has part — Magnetic-core memory. Magnetic-core memory.
5. Step 5. Magnetic-core memory — has part — Copper wire. Wires threaded through them.
6. Step 6. Copper wire — is part of — Electric generator. Windings.

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