Rotating gun mount and smartphone: what they have in common
- Step 1. Rotating gun mount — is part of — Anti-aircraft gun. All-round traverse.
- Step 2. Anti-aircraft gun — uses — Radar. Radar guidance.
- Step 3. Radar — includes — Doppler radar. A radar.
- Step 4. Doppler radar — has part — Digital signal processor. It picks out the Doppler shift.
- Step 5. Digital signal processor — is part of — Smartphone. Processing sound and images.