Busbar ribbons and bellows: what they have in common

1. Step 1. Busbar ribbons — is part of — Solar panel. They collect current from the cells.
2. Step 2. Solar panel — is part of — International Space Station. Solar panels.
3. Step 3. International Space Station — has part — Industrial robot. The Canadarm2 robotic arm.
4. Step 4. Industrial robot — uses — Program control of a machine. The movements are recorded in a program.
5. Step 5. Program control of a machine — is used in — Player piano. The tune is recorded on a perforated roll.
6. Step 6. Player piano — has part — Bellows. Pedal bellows create suction.

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