Electric car and electronic calculator: what they have in common

1. Step 1. Electric car — has part — Inverter. An inverter powers the traction motor.
2. Step 2. Inverter — is part of — Solar power station. Inverters convert direct current into alternating current.
3. Step 3. Solar power station — has part — Solar panel. A field of panels.
4. Step 4. Solar panel — is part of — Electronic calculator. Many run on a solar cell.

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