Chain drive and monitor: what they have in common

1. Step 1. Chain drive — is used in — Bicycle drivetrain. A bicycle drivetrain is a classic chain drive.
2. Step 2. Bicycle drivetrain — has part — Crank. The cranks turn the motion of the legs into rotation.
3. Step 3. Crank — is part of — Arithmometer. The handle for adding and subtracting.
4. Step 4. Arithmometer — evolved into — Electronic calculator. Electronics replaced mechanics.
5. Step 5. Electronic calculator — has part — Liquid-crystal display. An LCD display.
6. Step 6. Liquid-crystal display — is part of — Monitor. Then LCDs.

Open Evothings