Modem chip and atomic clock: what they have in common

1. Step 1. Modem chip — is part of — Modem. It turns bits into tones and back.
2. Step 2. Modem — has part — Digital signal processor. Signal processing in high-speed modems.
3. Step 3. Digital signal processor — is part of — Ultrasound scanner. Forming the image.
4. Step 4. Ultrasound scanner — uses — Piezoelectric effect. A piezo transducer.
5. Step 5. Piezoelectric effect — is used in — Quartz clock. The quartz resonator vibrates thanks to the piezoelectric effect.
6. Step 6. Quartz clock — evolved into — Atomic clock. The quartz oscillator is tuned to an atomic standard.

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