Marine chronometer and programmable logic controller: what they have in common

1. Step 1. Marine chronometer — has part — Bimetallic strip. Harrison invented the bimetal strip to compensate for temperature.
2. Step 2. Bimetallic strip — is part of — Thermostat. A classic thermostat is bimetallic.
3. Step 3. Thermostat — is part of — Smart home. A smart thermostat.
4. Step 4. Smart home — works like — Industrial automation. A smart home brings factory automation indoors: sensors switch lights and heating themselves.
5. Step 5. Industrial automation — uses — Programmable logic controller. Controllers.

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