USB-C and incandescent light bulb: what they have in common

1. Step 1. USB-C — is used in — Smartphone. The charging port.
2. Step 2. Smartphone — has part — LED. The camera flash.
3. Step 3. LED — is part of — Torch (flashlight). Modern torches use LEDs.
4. Step 4. Torch (flashlight) — has part — Incandescent light bulb. A bulb (today an LED).

Open Evothings