Space telescope and payment card: what they have in common

1. Step 1. Space telescope — has part — Solar panel. Solar panels.
2. Step 2. Solar panel — is part of — Electronic calculator. Many run on a solar cell.
3. Step 3. Electronic calculator — has part — Integrated circuit. A chip.
4. Step 4. Integrated circuit — is part of — Payment card. An EMV chip.

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