Handlebar and CNC machine: what they have in common

1. Step 1. Handlebar — is part of — Kick scooter. A scooter’s handlebar turns the front wheel, as on a bicycle.
2. Step 2. Kick scooter — evolved into — Electric scooter. A kick scooter with a motor.
3. Step 3. Electric scooter — has part — Lithium-ion battery. A lithium-ion battery.
4. Step 4. Lithium-ion battery — is part of — Exoskeleton. A battery.
5. Step 5. Exoskeleton — has part — Servomotor. Joint actuators.
6. Step 6. Servomotor — is part of — CNC machine. Servo drives move the axes.

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