Nuclear reactor and modem: what they have in common

1. Step 1. Nuclear reactor — is part of — Nuclear submarine. A reactor.
2. Step 2. Nuclear submarine — evolved from — Submarine. Nuclear power let submarines stay submerged for months.
3. Step 3. Submarine — has part — Sonar. Underwater acoustics.
4. Step 4. Sonar — works like — Ultrasound scanner. A medical sonar: the same echo principle.
5. Step 5. Ultrasound scanner — has part — Digital signal processor. Forming the image.
6. Step 6. Digital signal processor — is part of — Modem. Signal processing in high-speed modems.

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