Card payment terminal and bicycle: what they have in common

1. Step 1. Card payment terminal — is part of — Self-checkout. Card reader.
2. Step 2. Self-checkout — has part — Touch layer (capacitive). A touchscreen.
3. Step 3. Touch layer (capacitive) — is part of — Smartwatch. A touchscreen.
4. Step 4. Smartwatch — has part — Lithium-ion battery. Powered by a lithium-ion battery.
5. Step 5. Lithium-ion battery — is part of — Electric bicycle. A battery.
6. Step 6. Electric bicycle — evolved from — Bicycle. A bicycle with an electric drive.

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