Modem chip and personal computer: 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 — has part — Monitor. A screen.
5. Step 5. Monitor — is part of — Personal computer. A monitor.

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