Logic gate and cannon: what they have in common

1. Step 1. Logic gate — is part of — Flip-flop. A flip-flop is made of gates.
2. Step 2. Flip-flop — has part — Vacuum tube. The first flip-flop used vacuum tubes.
3. Step 3. Vacuum tube — includes — Magnetron. An electron vacuum device.
4. Step 4. Magnetron — is part of — Radar. The cavity magnetron made compact radar possible.
5. Step 5. Radar — is used in — Anti-aircraft gun. Radar guidance.
6. Step 6. Anti-aircraft gun — is a kind of — Cannon. A gun.

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