Stilts and smart meter: what they have in common

1. Step 1. Stilts — uses — Lever. An extended support.
2. Step 2. Lever — is used in — Joystick. A lever.
3. Step 3. Joystick — evolved into — Gamepad. A game controller.
4. Step 4. Gamepad — has part — Microcontroller. A microcontroller polls the buttons.
5. Step 5. Microcontroller — is part of — Smart meter. A microcontroller does the metering.

Open Evothings