Paper money and smart meter: what they have in common

1. Step 1. Paper money — evolved into — Payment card. The next form of money.
2. Step 2. Payment card — has part — Integrated circuit. An EMV chip.
3. Step 3. Integrated circuit — includes — Microcontroller. A chip.
4. Step 4. Microcontroller — is part of — Smart meter. A microcontroller does the metering.

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