Sensor and electronic calculator: what they have in common

1. Step 1. Sensor — includes — Thermistor. A temperature sensor.
2. Step 2. Thermistor — is part of — Digital thermometer. A thermistor.
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.

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