Pin tumbler lock and laser: what they have in common

1. Step 1. Pin tumbler lock — is part of — Lock and key. The pins keep the cylinder from turning without a key.
2. Step 2. Lock and key — evolved into — Smart lock. An electronic lock.
3. Step 3. Smart lock — has part — Servomotor. A bolt actuator.
4. Step 4. Servomotor — is part of — CNC machine. Servo drives move the axes.
5. Step 5. CNC machine — is used in — Laser cutting. CNC.
6. Step 6. Laser cutting — uses — Laser. A laser.

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