Concrete tetrapods and personal computer: what they have in common

1. Step 1. Concrete tetrapods — is part of — Breakwater. Tetrapods dissipate the energy of the waves.
2. Step 2. Breakwater — is made of — Concrete. Concrete blocks.
3. Step 3. Concrete — is material for — Nuclear power plant. The containment is concrete.
4. Step 4. Nuclear power plant — has part — Transformer. Transformers step up the voltage so the plant's power can travel far.
5. Step 5. Transformer — is part of — Switched-mode power supply. A high-frequency transformer.
6. Step 6. Switched-mode power supply — is part of — Personal computer. A power supply.

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