Music box and router: what they have in common

1. Step 1. Music box — has part — Mainspring. A mainspring turns the cylinder.
2. Step 2. Mainspring — is part of — Pocket watch. The mainspring stores the energy.
3. Step 3. Pocket watch — evolved into — Wristwatch. The watch moved to the wrist.
4. Step 4. Wristwatch — evolved into — Smartwatch. The form factor of a wristwatch.
5. Step 5. Smartwatch — has part — System on a chip (SoC). Inside is a system on a chip.
6. Step 6. System on a chip (SoC) — is part of — Router. A packet-processing processor.

Open Evothings