Infrared radiation and gutenberg printing press: what they have in common

1. Step 1. Infrared radiation — is used in — Remote control. An infrared signal.
2. Step 2. Remote control — has part — Microcontroller. A microcontroller sends the codes.
3. Step 3. Microcontroller — is part of — Printer. A controller processes the print job.
4. Step 4. Printer — works like — Gutenberg printing press. A printer is a personal printing press: it transfers an image onto paper.

Open Evothings