Gunpowder and smart meter: what they have in common

1. Step 1. Gunpowder — is used in — Anti-aircraft gun. Gunpowder propels the projectile.
2. Step 2. Anti-aircraft gun — uses — Radar. Radar guidance.
3. Step 3. Radar — works like — Parking sensor. A parking sensor, like radar, catches a reflected signal — only ultrasonic.
4. Step 4. Parking sensor — has part — Microcontroller. A microcontroller calculates the distance.
5. Step 5. Microcontroller — is part of — Smart meter. A microcontroller does the metering.

Open Evothings