Cockpit and smart meter: what they have in common

1. Step 1. Cockpit — is part of — Aeroplane. A cockpit.
2. Step 2. Aeroplane — evolved into — Jet airliner. A jet aircraft.
3. Step 3. Jet airliner — has part — Flight recorder. Flight recorders.
4. Step 4. Flight recorder — has part — Flash memory. Memory.
5. Step 5. Flash memory — is part of — Microcontroller. Program memory.
6. Step 6. Microcontroller — is part of — Smart meter. A microcontroller does the metering.

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