Vacuum sealer and smart meter: what they have in common

1. Step 1. Vacuum sealer — is used in — Sous vide. Vacuum bags.
2. Step 2. Sous vide — uses — Thermostat. A precise temperature.
3. Step 3. Thermostat — is part of — Rice cooker. Switching off by temperature.
4. Step 4. Rice cooker — evolved into — Multicooker. A multicooker.
5. Step 5. Multicooker — uses — Microcontroller. Programs.
6. Step 6. Microcontroller — is part of — Smart meter. A microcontroller does the metering.

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