FPGA and car: what they have in common

1. Step 1. FPGA — has part — Logic gate. Programmable logic blocks.
2. Step 2. Logic gate — is part of — Flip-flop. A flip-flop is made of gates.
3. Step 3. Flip-flop — has part — Vacuum tube. The first flip-flop used vacuum tubes.
4. Step 4. Vacuum tube — is part of — Car radio. The first car radios used vacuum tubes.
5. Step 5. Car radio — is part of — Car. A car radio.

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