Radio navigation and monitor: what they have in common

1. Step 1. Radio navigation — evolved into — GPS (satellite navigation). Satellite radio navigation.
2. Step 2. GPS (satellite navigation) — is used in — Car navigator. GPS.
3. Step 3. Car navigator — has part — Liquid-crystal display. A screen.
4. Step 4. Liquid-crystal display — is part of — Monitor. Then LCDs.

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