Thermometer and payment card: what they have in common

1. Step 1. Thermometer — includes — Clinical thermometer. A thermometer.
2. Step 2. Clinical thermometer — evolved into — Digital thermometer. A replacement for the mercury thermometer.
3. Step 3. Digital thermometer — has part — Liquid-crystal display. The reading is on an LCD.
4. Step 4. Liquid-crystal display — is part of — Electronic calculator. An LCD display.
5. Step 5. Electronic calculator — has part — Integrated circuit. A chip.
6. Step 6. Integrated circuit — is part of — Payment card. An EMV chip.

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