If you're looking at the parts I think, those aren't gears, they are reels, to imply that the LCD is a rear-projected celluloid film screen. I wonder if they spin and flicker a bulb when the machine is on. Of course, to get even more verisimilitude, he could add the smell of ozone, lubricating oil, and singed dust.
edit - yep, from the description:
On the sides of the LCD case are custom-made, tombstone-shaped
beveled-glass windows through which you can see a vintage film
projector with custom-made spinning brass film reels, which is
pointing into a sort of light projection box with metal accents.
Inside this light box is a small LED light source with a
custom-designed strobe light circuit which flickers and flashes,
giving the impression that the projector is displaying images directly
to the rear of the LCD screen. The projector can be controlled through
a small switch on the top of the LCD.