Arduino and gas lamp: what they have in common

1. Step 1. Arduino — has part — Microcontroller. An AVR microcontroller.
2. Step 2. Microcontroller — is part of — Remote control. A microcontroller sends the codes.
3. Step 3. Remote control — has part — LED. An infrared LED.
4. Step 4. LED — is part of — Street light. LEDs.
5. Step 5. Street light — evolved from — Gas lamp. Gas lamps.

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